Fix typo in reference

src/jat.sh.skel

@@ -37,7 +37,7 @@ shellfu import termcolors
 # restricted to contain only "safe" chars.  Following classes are
 # defined:
 #
-#  *  *simple name* - must begin with letter or underscore; second
+#  *  *simple word* - must begin with letter or underscore; second
 #     and further characters may be letter, digit or underscore.
 #