PEP 512: Resolve dangling hyphens (#3357)

Author: AA-Turner

pep-0512.txt

@@ -262,8 +262,8 @@ Requirements for the cpython Repository
 
 Obviously the most active and important repository currently hosted
 at hg.python.org [#h.p.o]_ is the cpython
-repository [#cpython-repo]_. Because of its importance and high-
-frequency use, it requires more tooling before being moved to GitHub
+repository [#cpython-repo]_. Because of its importance and
+high-frequency use, it requires more tooling before being moved to GitHub
 compared to the other repositories mentioned in this PEP.