Use mod/admin_or_permissions instead of just mod/admin. (Cog-Creators#4109)

* Update modcheck.

* _or_permissions for set nickname & serverprefix

Author: flaree

redbot/cogs/streams/streams.py

@@ -273,7 +273,7 @@ async def check_online(
 
     @commands.group()
     @commands.guild_only()
-    @checks.mod()
+    @checks.mod_or_permissions(manage_channels=True)
     async def streamalert(self, ctx: commands.Context):
         """Manage automated stream alerts."""
         pass
@@ -419,9 +419,9 @@ async def stream_alert(self, ctx: commands.Context, _class, channel_name):
         await self.add_or_remove(ctx, stream)
 
     @commands.group()
-    @checks.mod()
+    @checks.mod_or_permissions(manage_channels=True)
     async def streamset(self, ctx: commands.Context):
-        """Set tokens for accessing streams."""
+        """Manage stream alert settings."""
         pass
 
     @streamset.command(name="timer")

redbot/core/core_commands.py

@@ -1333,7 +1333,7 @@ async def _username(self, ctx: commands.Context, *, username: str):
             await ctx.send(_("Done."))
 
     @_set.command(name="nickname")
-    @checks.admin()
+    @checks.admin_or_permissions(manage_nicknames=True)
     @commands.guild_only()
     async def _nickname(self, ctx: commands.Context, *, nickname: str = None):
         """Sets [botname]'s nickname."""
@@ -1355,7 +1355,7 @@ async def prefix(self, ctx: commands.Context, *prefixes: str):
         await ctx.send(_("Prefix set."))
 
     @_set.command(aliases=["serverprefixes"])
-    @checks.admin()
+    @checks.admin_or_permissions(manage_guild=True)
     @commands.guild_only()
     async def serverprefix(self, ctx: commands.Context, *prefixes: str):
         """Sets [botname]'s server prefix(es)."""