Update peps/pep-0812.rst

Co-authored-by: Hugo van Kemenade <[email protected]>

Author: skirpichev

peps/pep-0812.rst

@@ -209,7 +209,7 @@ That [8]_ might be viewed as a failure of the new approach: no compiler from maj
 players had a correct implementation of the C99 Annex G.
 
 On the other hand, this might be also viewed as an indication of poor adoption of
-Annex G itself.  Notably, the MSVC miss one.  So, neither the CPython, nor
+Annex G itself.  Notably, MSVC lacks its support.  So, neither the CPython, nor
 any other Python implementation (per author's knowledge), uses native complex
 arithmetic from the C language, and things will hardly be changed soon.