Fix re.po syntax

A msgstr was missing its opening double quotes, which gettext's msgcat
complained about (but powrap and polib didn't).

See https://git.afpy.org/AFPy/powrap/pulls/4 and
izimobil/polib#161 for PRs to fix both of those.

Signed-off-by: Rodrigo Tobar <rtobar@icrar.org>

Author: rtobar

library/re.po

@@ -2810,7 +2810,7 @@ msgstr "$ (dólar)"
 
 #: ../Doc/library/re.rst:123
 msgid "* (asterisk)"
-msgstr * (asterisco)"
+msgstr "* (asterisco)"
 
 #: ../Doc/library/re.rst:130
 msgid "+ (plus)"