Fix capitalization: nginx

It should be either NGINX or nginx, and this commit converts the string in uppercase to lowercase.

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/configuring-playbook-prometheus-grafana.md

@@ -73,7 +73,7 @@ Name | Description
 `prometheus_enabled`|[Prometheus](https://prometheus.io) is a time series database. It holds all the data we're going to talk about.
 `prometheus_node_exporter_enabled`|[Node Exporter](https://prometheus.io/docs/guides/node-exporter/) is an addon of sorts to Prometheus that collects generic system information such as CPU, memory, filesystem, and even system temperatures
 `prometheus_postgres_exporter_enabled`|[Postgres Exporter](configuring-playbook-prometheus-postgres.md) is an addon of sorts to expose Postgres database metrics to Prometheus.
-`matrix_prometheus_nginxlog_exporter_enabled`|[NGINX Log Exporter](configuring-playbook-prometheus-nginxlog.md) is an addon of sorts to expose NGINX logs to Prometheus.
+`matrix_prometheus_nginxlog_exporter_enabled`|[nginx Log Exporter](configuring-playbook-prometheus-nginxlog.md) is an addon of sorts to expose nginx logs to Prometheus.
 `grafana_enabled`|[Grafana](https://grafana.com/) is the visual component. It shows (on the `stats.example.com` subdomain) the dashboards with the graphs that we're interested in
 `grafana_anonymous_access`|By default you need to log in to see graphs. If you want to publicly share your graphs (e.g. when asking for help in [`#synapse:matrix.org`](https://matrix.to/#/#synapse:matrix.org?via=matrix.org&via=privacytools.io&via=mozilla.org)) you'll want to enable this option.
 `grafana_default_admin_user`<br>`grafana_default_admin_password`|By default Grafana creates a user with `admin` as the username and password. If you feel this is insecure and you want to change it beforehand, you can do that here
@@ -107,7 +107,7 @@ Name | Description
 `prometheus_node_exporter_container_labels_traefik_enabled`|Set this to `true` to expose the node (general system stats) metrics on `https://matrix.example.com/metrics/node-exporter`. To password-protect the metrics, see `matrix_metrics_exposure_http_basic_auth_users` above.
 `prometheus_postgres_exporter_enabled`|Set this to `true` to enable the [Postgres exporter](configuring-playbook-prometheus-postgres.md) (locally, on the container network)
 `prometheus_postgres_exporter_container_labels_traefik_enabled`|Set this to `true` to expose the [Postgres exporter](configuring-playbook-prometheus-postgres.md) metrics on `https://matrix.example.com/metrics/postgres-exporter`. To password-protect the metrics, see `matrix_metrics_exposure_http_basic_auth_users` above.
-`matrix_prometheus_nginxlog_exporter_enabled`|Set this to `true` to enable the [NGINX Log exporter](configuring-playbook-prometheus-nginxlog.md) (locally, on the container network)
+`matrix_prometheus_nginxlog_exporter_enabled`|Set this to `true` to enable the [nginx Log exporter](configuring-playbook-prometheus-nginxlog.md) (locally, on the container network)
 `matrix_sliding_sync_metrics_enabled`|Set this to `true` to make [Sliding Sync](configuring-playbook-sliding-sync-proxy.md) expose metrics (locally, on the container network)
 `matrix_sliding_sync_metrics_proxying_enabled`|Set this to `true` to expose the [Sliding Sync](configuring-playbook-sliding-sync-proxy.md) metrics on `https://matrix.example.com/metrics/sliding-sync`. To password-protect the metrics, see `matrix_metrics_exposure_http_basic_auth_users` above.
 `matrix_bridge_hookshot_metrics_enabled`|Set this to `true` to make [Hookshot](configuring-playbook-bridge-hookshot.md) expose metrics (locally, on the container network)

docs/configuring-playbook-prometheus-nginxlog.md

@@ -1,4 +1,4 @@
-# Enabling metrics and graphs for NginX logs (optional)
+# Enabling metrics and graphs for nginx logs (optional)
 
 The playbook can install and configure the [prometheus-nginxlog-exporter](https://github.com/martin-helmich/prometheus-nginxlog-exporter/) service for you, in order to make it possible to have some (visual) insight into [nginx](https://nginx.org/) logs.
 
@@ -25,7 +25,7 @@ matrix_prometheus_nginxlog_exporter_enabled: true
 ### Save metrics on an external Prometheus server (optional)
 
 > [!WARNING]
-> Metrics and resulting graphs can contain a lot of information. NginX logs contain information like IP address, URLs, UserAgents and more. This information can reveal usage patterns and could be considered Personally Identifiable Information (PII). Think about this before enabling (anonymous) access. Please make sure you change the default Grafana password.
+> Metrics and resulting graphs can contain a lot of information. nginx logs contain information like IP address, URLs, UserAgents and more. This information can reveal usage patterns and could be considered Personally Identifiable Information (PII). Think about this before enabling (anonymous) access. Please make sure you change the default Grafana password.
 
 The playbook will automatically integrate the metrics into the [Prometheus](./configuring-playbook-prometheus-grafana.md) server provided with this playbook (if enabled). In such cases, the metrics endpoint is not exposed publicly — it's only available on the container network.
 

docs/configuring-playbook.md

@@ -199,7 +199,7 @@ Services that help you in administrating and monitoring your Matrix installation
 
 - [Enabling metrics and graphs (Prometheus, Grafana) for your Matrix server](configuring-playbook-prometheus-grafana.md)
 
-- [Enabling metrics and graphs for NginX logs](configuring-playbook-prometheus-nginxlog.md)
+- [Enabling metrics and graphs for nginx logs](configuring-playbook-prometheus-nginxlog.md)
 
 - [Setting up the rageshake bug report server](configuring-playbook-rageshake.md)