Fix indented text captured by tabs group directive

This paragraph has a leading space which causes it to be captured by the previous tabs directive

(cherry picked from commit 0d27e5724684ef45a0bbdf2d54d6ab4cbca3af98)

getting_started/first_3d_game/06.jump_and_squash.rst

@@ -288,7 +288,7 @@ With this code, if no collisions occurred on a given frame, the loop won't run.
         }
     }
 
- That's a lot of new functions. Here's some more information about them.
+That's a lot of new functions. Here's some more information about them.
 
 The functions ``get_slide_collision_count()`` and ``get_slide_collision()`` both come from
 the :ref:`CharacterBody3D <class_CharacterBody3D>` class and are related to