Bug 762282 - Link ends with "/."

Add a comment for translators, which will be extracted by gettext,
ensuring that all translators are aware of the problem.

app/about.h

@@ -30,6 +30,11 @@
   _("Copyright © 1995-%s\n" \
     "Spencer Kimball, Peter Mattis and the GIMP Development Team")
 
+/* TRANSLATORS: do not end the license URL with a dot, because it would
+ * be in the link. Because of technical limitations, make sure the URL
+ * ends with a space, a newline or is end of text.
+ * Cf. bug 762282.
+ */
 #define GIMP_LICENSE \
   _("GIMP is free software: you can redistribute it and/or modify it "   \
     "under the terms of the GNU General Public License as published by " \

plug-ins/help/gimphelpdomain.c

@@ -184,6 +184,12 @@ gimp_help_domain_map (GimpHelpDomain    *domain,
                 {
                   g_message ("%s\n\n%s",
                              _("The GIMP user manual is not available."),
+                             /* TRANSLATORS: do not end the URL with a dot,
+                              * it would be in the link. Because of
+                              * technical limitations, make sure the URL
+                              * ends with a space, a newline or is end of text.
+                              * Cf. bug 762282.
+                              */
                              _("Please install the additional help package "
                                "or use the online user manual at: "
                                "http://docs.gimp.org/"));