Fix misspellings and enable misspell on ci (#16285)

Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>

store/sqlstore/channel_store_categories.go

@@ -361,7 +361,7 @@ func (s SqlChannelStore) completePopulatingCategoryChannels(category *model.Side
 	return result, nil
 }
 
-func (s SqlChannelStore) completePopulatingCategoryChannelsT(transation *gorp.Transaction, category *model.SidebarCategoryWithChannels) (*model.SidebarCategoryWithChannels, error) {
+func (s SqlChannelStore) completePopulatingCategoryChannelsT(transaction *gorp.Transaction, category *model.SidebarCategoryWithChannels) (*model.SidebarCategoryWithChannels, error) {
 	if category.Type == model.SidebarCategoryCustom || category.Type == model.SidebarCategoryFavorites {
 		return category, nil
 	}
@@ -406,7 +406,7 @@ func (s SqlChannelStore) completePopulatingCategoryChannelsT(transation *gorp.Tr
 		return nil, errors.Wrap(err, "channel_tosql")
 	}
 
-	if _, err = transation.Select(&channels, sql, args...); err != nil {
+	if _, err = transaction.Select(&channels, sql, args...); err != nil {
 		return nil, store.NewErrNotFound("ChannelMembers", "<too many fields>")
 	}
 

store/sqlstore/post_store_test.go

@@ -32,7 +32,7 @@ func TestMysqlStopWords(t *testing.T) {
 			Expected: []string{"my car", "so real", "test this-and-that awesome"},
 		},
 		{
-			Name:     "Should not remove part of a word containg stop words",
+			Name:     "Should not remove part of a word containing stop words",
 			Args:     []string{"whereabouts", "wherein", "tothis", "thisorthat", "waswhen", "whowas", "inthe", "whowill", "thewww"},
 			Expected: []string{"whereabouts", "wherein", "tothis", "thisorthat", "waswhen", "whowas", "inthe", "whowill", "thewww"},
 		},
@@ -42,7 +42,7 @@ func TestMysqlStopWords(t *testing.T) {
 			Empty: true,
 		},
 		{
-			Name:     "Should not remove part of a word containg stop words separated by hyphens",
+			Name:     "Should not remove part of a word containing stop words separated by hyphens",
 			Args:     []string{"where-about", "where-in", "to-this", "this-or-that", "was-when", "who-was", "in-the", "who-will", "the-www"},
 			Expected: []string{"where-about", "where-in", "to-this", "this-or-that", "was-when", "who-was", "in-the", "who-will", "the-www"},
 		},