Why don't you install and update a Gnome extension the "Gnome" way i.e. opening
https://extensions.gnome.org/ in Firefox, search for "Dash to Dock" and enable the extension there by clicking at "On/Off"?
You have to "yum install gnome-shell-browser-plugin" first to enable Firfox to connect to Gnome extensions. For reference:
viewtopic.php?t=47341#p259708
I suggest to do a "yum remove gnome-shell-extension-dash-to-dock" before installing it directly from Gnome.
You can also check your installed extensions and update them later at
https://extensions.gnome.org/local/