bug#74132: Acknowledgement (31.0.50; thing-at-pt, ffap and Github markdown)

[Madhu <enometh@meer.net>]

There was a typo in the patch I posted. It should instead look like this
```
diff --git a/lisp/thingatpt.el b/lisp/thingatpt.el
--- a/lisp/thingatpt.el
+++ b/lisp/thingatpt.el
@@ -502,9 +502,15 @@ thing-at-point-bounds-of-url-at-point
       (let* ((allowed-chars "--:=&?$+@-Z_[:alpha:]~#,%;*()!'[]")
 	     (skip-before "^[0-9a-zA-Z]")
 	     (skip-after  ":;.,!?'")
+             (hard-beg (and thing-at-point-beginning-of-url-regexp
+                            (save-excursion
+                              (and
+                               (re-search-backward
+                                thing-at-point-beginning-of-url-regexp nil t)
+                               (point)))))
 	     (pt (point))
 	     (beg (save-excursion
-		    (skip-chars-backward allowed-chars)
+		    (skip-chars-backward allowed-chars hard-beg)
 		    (skip-chars-forward skip-before pt)
 		    (point)))
 	     (end (save-excursion
```