Merge pull request #3593 from Instrye/patch-2

[CI SKIP] Fix. Migration userguide parameter error

Author: MGatner

user_guide_src/source/dbmgmt/migration.rst

@@ -323,17 +323,17 @@ Class Reference
 	  :returns:   The current MigrationRunner instance
 	  :rtype:     CodeIgniter\\Database\\MigrationRunner
 
-	  Sets the path the library should look for migration files::
+	  Sets the namespace the library should look for migration files::
 
-	    $migration->setNamespace($path)
+	    $migration->setNamespace($namespace)
 	              ->latest();
 	.. php:method:: setGroup($group)
 
 	  :param  string  $group: database group name.
 	  :returns:   The current MigrationRunner instance
 	  :rtype:     CodeIgniter\\Database\\MigrationRunner
 
-	  Sets the path the library should look for migration files::
+	  Sets the group the library should look for migration files::
 
-	    $migration->setNamespace($path)
+	    $migration->setGroup($group)
 	              ->latest();