fix docs: add join/part/kick to the channel doc (again)

Co-authored-by: dgw <[email protected]>

Author: Exirel

docs/source/plugin/bot/channels.rst

@@ -123,7 +123,7 @@ will leave the channel instead of joining it.
 .. note::
 
     Both ``join`` and ``part`` methods send an IRC command to the server, but they
-    don't update the bot's configuration file: when the bot will restart, unless
+    don't update the bot's configuration file: when the bot restarts, unless
     :attr:`bot.settings.core.channels <sopel.config.core_section.CoreSection.channels>`
     has been updated manually, the bot won't remember the channels joined or
     left from these methods alone.