Fix method name to check_all_pending!

The method added in 03379d1 is `check_all_pending!`, not
`check_pending_migrations!`.

Author: sinsoku

activerecord/CHANGELOG.md

@@ -283,9 +283,9 @@
 
     *Jean Boussier*
 
-*   Deprecate `check_pending!` in favor of `check_pending_migrations!`.
+*   Deprecate `check_pending!` in favor of `check_all_pending!`.
 
-    `check_pending!` will only check for pending migrations on the current database connection or the one passed in. This has been deprecated in favor of `check_pending_migrations!` which will find all pending migrations for the database configurations in a given environment.
+    `check_pending!` will only check for pending migrations on the current database connection or the one passed in. This has been deprecated in favor of `check_all_pending!` which will find all pending migrations for the database configurations in a given environment.
 
     *Eileen M. Uchitelle*
 

activerecord/lib/active_record/migration.rb

@@ -644,10 +644,10 @@ def nearest_delegate # :nodoc:
 
       # Raises ActiveRecord::PendingMigrationError error if any migrations are pending.
       #
-      # This is deprecated in favor of +check_pending_migrations!+
+      # This is deprecated in favor of +check_all_pending!+
       def check_pending!(connection = ActiveRecord::Tasks::DatabaseTasks.migration_connection)
         ActiveRecord.deprecator.warn(<<-MSG.squish)
-          The `check_pending!` method is deprecated in favor of `check_pending_migrations!`. The
+          The `check_pending!` method is deprecated in favor of `check_all_pending!`. The
           new implementation will loop through all available database configurations and find
           pending migrations. The prior implementation did not permit this.
         MSG