a -> an (minor typo fix)

diff --git a/doc/bison.texinfo b/doc/bison.texinfo
index c1bff43ca1f832211d171865c608cd62dcc16215..8f35ac602d8ae860b86d80bb04c36351f6dee506 100644 (file)
--- a/doc/bison.texinfo
+++ b/doc/bison.texinfo
@@ -356,7 +356,7 @@ encourage people to make other software free.  So we decided to make the
 practical conditions for using Bison match the practical conditions for
 using the other @acronym{GNU} tools.
 
-This exception applies only when Bison is generating C code for a
+This exception applies only when Bison is generating C code for an
 @acronym{LALR}(1) parser; otherwise, the @acronym{GPL} terms operate
 as usual.  You can
 tell whether the exception applies to your @samp{.c} output file by