DOC: fix read_stata formatting typo

Author: cpcloud

doc/source/release.rst

@@ -122,7 +122,7 @@ Improvements to existing features
     without ``MultiIndex`` raises ``ValueError`` (:issue:`4759`, :issue:`4837`)
   - ``read_json`` now raises a (more informative) ``ValueError`` when the dict
     contains a bad key and ``orient='split'`` (:issue:`4730`, :issue:`4838`)
-  - ``read_stata` now accepts Stata 13 format (:issue:`4291`)
+  - ``read_stata`` now accepts Stata 13 format (:issue:`4291`)
 
 API Changes
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