File manpage-fix.diff of Package fastd

--- a/doc/fastd.1	2021-06-27 03:12:20.000000000 -0700
+++ b/doc/fastd.1	2023-10-26 00:34:10.269656214 -0700
@@ -117,7 +117,8 @@
 The full documentation for
 .B fastd
 is available online at
-\fIhttps://gluon.readthedocs.io/\fR.
+\fIhttps://fastd.readthedocs.io/\fR
+or locally in \fI@PKGDOCDIR@\fR.
 
 Additional resources can be found in the Wiki at
 \fIhttps://github.com/NeoRaider/fastd/wiki\fR.