Update gdscript_format_string.rst

getting_started/scripting/gdscript/gdscript_format_string.rst

@@ -3,7 +3,7 @@
 GDScript format strings
 =======================
 
-GDScript offers a feature called *format strings* which allows reusing text
+GDScript offers a feature called *format strings*, which allows reusing text
 templates to succinctly create different but similar strings.
 
 Format strings are just like normal strings, except they contain certain
@@ -270,7 +270,7 @@ examples of that functionality.
 | Prefix          | ``"Hi, %0 v%1".format(["Godette", "3.0"], "%_")``    | Hi, Godette v3.0 |
 +-----------------+------------------------------------------------------+------------------+
 
-Combining both the ``String.format`` method and the ``%`` operator could be useful as
+Combining both the ``String.format`` method and the ``%`` operator could be useful, as
 ``String.format`` does not have a way to manipulate the representation of numbers.
 
 +---------------------------------------------------------------------------+-------------------+