Fix a few spelling errors

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -64,7 +64,7 @@ body:
     attributes:
       label: Checklist
       description: >
-        Let's make sure you've properly done due dilligence when reporting this issue!
+        Let's make sure you've properly done due diligence when reporting this issue!
       options:
         - label: I have searched the open issues for duplicates.
           required: true

discord/client.py

@@ -840,7 +840,7 @@ def get_stage_instance(self, id: int, /) -> Optional[StageInstance]:
         Returns
         --------
         Optional[:class:`.StageInstance`]
-            The returns stage instance of ``None`` if not found.
+            The stage instance or ``None`` if not found.
         """
         from .channel import StageChannel
 

discord/ext/commands/help.py

@@ -180,8 +180,8 @@ def __repr__(self):
         return fmt.format(self)
 
 
-def _not_overriden(f):
-    f.__help_command_not_overriden__ = True
+def _not_overridden(f):
+    f.__help_command_not_overridden__ = True
     return f
 
 
@@ -197,7 +197,7 @@ async def prepare(self, ctx):
         self.callback = injected.command_callback
 
         on_error = injected.on_help_command_error
-        if not hasattr(on_error, "__help_command_not_overriden__"):
+        if not hasattr(on_error, "__help_command_not_overridden__"):
             if self.cog is not None:
                 self.on_error = self._on_error_cog_implementation
             else:
@@ -645,7 +645,7 @@ async def send_error_message(self, error):
         destination = self.get_destination()
         await destination.send(error)
 
-    @_not_overriden
+    @_not_overridden
     async def on_help_command_error(self, ctx, error):
         """|coro|