Update roles/custom/matrix-bot-draupnir/defaults/main.yml: replace "when" with "if" for consistency and to clarify that these are conditions

Note that there is no other "when" on this file. It is not sensible to keep these exceptions here.

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

roles/custom/matrix-bot-draupnir/defaults/main.yml

@@ -64,16 +64,16 @@ matrix_bot_draupnir_pantalaimon_breakage_ignore: false
 # Rust Crypto requires a clean access token that has not touched E2EE so curl is recommended as a method to obtain it.
 matrix_bot_draupnir_enable_experimental_rust_crypto: false
 
-# The access token for the bot user. Required when NOT using Pantalaimon.
+# The access token for the bot user. Required if Pantalaimon is NOT used.
 # (Otherwise provide `matrix_bot_draupnir_pantalaimon_username` and `matrix_bot_draupnir_pantalaimon_password` instead.)
 matrix_bot_draupnir_access_token: ""
 
-# Username and password for the bot. Required when using Pantalaimon.
+# Username and password for the bot. Required if Pantalaimon is used.
 # (Otherwise provide `matrix_bot_draupnir_access_token` instead.)
 matrix_bot_draupnir_pantalaimon_username: ""
 matrix_bot_draupnir_pantalaimon_password: ""
 
-# Username and password the bot uses for logging in directly. If using Pantalaimon
+# Username and password the bot uses for logging in directly. If Pantalaimon is used,
 # these values become the values of `matrix_bot_draupnir_pantalaimon_username` and `matrix_bot_draupnir_pantalaimon_password`
 matrix_bot_draupnir_login: "{{ matrix_bot_draupnir_pantalaimon_username if matrix_bot_draupnir_pantalaimon_use == 'true' else 'bot.draupnir' }}"
 matrix_bot_draupnir_password: "{{ matrix_bot_draupnir_pantalaimon_password }}"