Small fix for the NAME section in man/form_variables.3x

[Sven Joachim]

I'm getting a lintian warning about a bad whatis entry in
form_variables.3form.gz, this seems due to missing commas in the TYPE*
enumeration.  It also seems consistent to print these in bold, here is a
patch for that:

--8<---------------cut here---------------start------------->8---
diff --git a/man/form_variables.3x b/man/form_variables.3x
index 4d77d05..d4a7640 100644
--- a/man/form_variables.3x
+++ b/man/form_variables.3x
@@ -32,13 +32,13 @@
 .na
 .hy 0
 .SH NAME
-TYPE_ALNUM
-TYPE_ALPHA
-TYPE_ENUM
-TYPE_INTEGER
-TYPE_IPV4
-TYPE_NUMERIC
-TYPE_REGEXP
+\fBTYPE_ALNUM\fR,
+\fBTYPE_ALPHA\fR,
+\fBTYPE_ENUM\fR,
+\fBTYPE_INTEGER\fR,
+\fBTYPE_IPV4\fR,
+\fBTYPE_NUMERIC\fR,
+\fBTYPE_REGEXP\fR
 \- form system global variables
 .ad
 .hy
--8<---------------cut here---------------end--------------->8---

Cheers,
       Sven