Update examples/reverse-proxies/nginx/matrix.conf: fix capitalization

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

examples/reverse-proxies/nginx/matrix.conf

@@ -11,9 +11,9 @@ server {
     http3 on;
 
     # TODO: add/remove services and their subdomains if you use/don't use them
-    # this example is using hosting something on the base domain and an element web client, so example.com and element.example.com are listed in addition to matrix.example.com
+    # this example is using hosting something on the base domain and an Element Web client, so example.com and element.example.com are listed in addition to matrix.example.com
     # if you don't use those, you can remove them
-    # if you use e.g. dimension on dimension.example.com, add dimension.example.com to the server_name list
+    # if you use e.g. Dimension on dimension.example.com, add dimension.example.com to the server_name list
     server_name example.com matrix.example.com element.example.com;
 
     location / {