Extend images regex to also match the appendix after file extension

Some images have an appendix after the file extension making the
builtin regex fail.
An example would be something like https://example.com/foo.svg?size=800x600.

circe-display-images.el

@@ -74,7 +74,7 @@ See `enable-circe-display-images'."
   :group 'circe)
 
 (defcustom circe-display-images-image-regex
-  "\\(https?://[^ ]*?\\.\\(?:png\\|jpg\\|jpeg\\|svg\\|gif\\)\\)"
+  "\\(https?://[^ ]*?\\.\\(?:png\\|jpg\\|jpeg\\|svg\\|gif\\).*\\)"
   "Regex used to find images in channel messages. This regex needs to be
 greedy to match multiple images on the same line."
   :group 'circe-display-images