PEP 498: Capitalize the F at the start of the sentence (GH-301)

pep-0498.txt

@@ -103,7 +103,7 @@ With an f-string, this becomes::
   >>> f'The value is {value}.'
   'The value is 80.'
 
-f-strings provide a concise, readable way to include the value of
+F-strings provide a concise, readable way to include the value of
 Python expressions inside strings.
 
 In this sense, ``string.Template`` and %-formatting have similar