Corrected typo in gdscript_basics.rst

beging -> begin

tutorials/scripting/gdscript/gdscript_basics.rst

@@ -1890,7 +1890,7 @@ If you want to use ``extends`` too, you can keep both on the same line::
 
 .. warning::
 
-    The Godot editor will hide these custom classes with names that beging with the prefix
+    The Godot editor will hide these custom classes with names that begin with the prefix
     "Editor" in the 'Create New Node' or 'Create New Scene' dialog windows. The classes 
     are available for instantiation at runtime via their class names, but are 
     automatically hidden by the editor windows along with the built-in editor nodes used