Fix capitalization: riot → Riot

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

roles/custom/matrix-bridge-appservice-irc/defaults/main.yml

@@ -77,7 +77,7 @@ matrix_appservice_irc_ircService_servers: []  # noqa var-naming
 #     # networkId: "example"
 
 #     # URL to an icon used as the network icon whenever this network appear in
-#     # a network list. (Like in the riot room directory, for instance.)
+#     # a network list. (Like in the Riot room directory, for instance.)
 #     # icon: https://example.com/images/hash.png
 
 #     # The port to connect to. Optional.