[emacs] github-url: fix end line resolution

evil-mode kinda messes up the line computation. This fixes that.
Previously we always used to decrease the line once computed, but this
caused problems if we did char based selection instead of a line based
selection.

Author: meain

emacs/.config/emacs/lisp/web.el

@@ -64,7 +64,7 @@ If region is active, link covers the region."
               (unless (equal major-mode 'dired-mode)
                 (if (use-region-p)
                     (let* ((start (line-number-at-pos (region-beginning)))
-                           (end (1- (line-number-at-pos (region-end)))))
+                           (end (line-number-at-pos (1- (region-end)))))
                       (if (= start end)
                           (format "#L%s" start)
                         (format "#L%s-L%s" start end)))