docs: Shorten the menu item in dbmgmt/index.rst

Shorten the menu item "Database Manipulation with Database Forge" to "Database Forge"

Author: obozdag

user_guide_src/source/dbmgmt/index.rst

@@ -7,7 +7,7 @@ CodeIgniter comes with tools to restructure or seed your database.
 .. toctree::
     :titlesonly:
 
-    Database Manipulation with Database Forge <forge>
+    Database Forge <forge>
     Database Migrations <migration>
     Database Seeding <seeds>
     db_commands