Feed more slashes to mautrix bridges when using SQLite

This makes the `sqlite://` URI match what we were using before
and what the config expects.

roles/matrix-bridge-mautrix-facebook/defaults/main.yml

@@ -55,7 +55,7 @@ matrix_mautrix_facebook_database_connection_string: 'postgresql://{{ matrix_maut
 
 matrix_mautrix_facebook_appservice_database: "{{
 	{
-		'sqlite': ('sqlite://' + matrix_mautrix_facebook_sqlite_database_path_in_container),
+		'sqlite': ('sqlite:///' + matrix_mautrix_facebook_sqlite_database_path_in_container),
 		'postgres': matrix_mautrix_facebook_database_connection_string,
 	}[matrix_mautrix_facebook_database_engine]
 }}"

roles/matrix-bridge-mautrix-hangouts/defaults/main.yml

@@ -62,7 +62,7 @@ matrix_mautrix_hangouts_database_connection_string: 'postgresql://{{ matrix_maut
 
 matrix_mautrix_hangouts_appservice_database: "{{
 	{
-		'sqlite': ('sqlite://' + matrix_mautrix_hangouts_sqlite_database_path_in_container),
+		'sqlite': ('sqlite:///' + matrix_mautrix_hangouts_sqlite_database_path_in_container),
 		'postgres': matrix_mautrix_hangouts_database_connection_string,
 	}[matrix_mautrix_hangouts_database_engine]
 }}"

roles/matrix-bridge-mautrix-telegram/defaults/main.yml

@@ -66,7 +66,7 @@ matrix_mautrix_telegram_database_connection_string: 'postgresql://{{ matrix_maut
 
 matrix_mautrix_telegram_appservice_database: "{{
 	{
-		'sqlite': ('sqlite://' + matrix_mautrix_telegram_sqlite_database_path_in_container),
+		'sqlite': ('sqlite:///' + matrix_mautrix_telegram_sqlite_database_path_in_container),
 		'postgres': matrix_mautrix_telegram_database_connection_string,
 	}[matrix_mautrix_telegram_database_engine]
 }}"