common-lisp-hyperspec-root should be file:///usr/share/doc/hyperspec/ instead

[u922796]

The current startup file contains: (setq common-lisp-hyperspec-root "/usr/share/doc/hyperspec/").

It should be changed to (setq common-lisp-hyperspec-root "file:///usr/share/doc/hyperspec/").

Reasons:

* When the Emacs default browser is Eww (setq browse-url-browser-function 'eww-browse-url), having common-lisp-hyperspec-root set to "/usr/share/doc/hyperspec/" breaks things. Eww will be looking for http:///usr/share/doc/hyperspec/... The error message will be: "open-network-stream: /80 Name or service not known".

Although the current value works for web browsers such as Firefox, it may break for other browsers such as Eww. Firefox automatically converts paths like /usr/share/doc/hyperspec/... into file:///usr/share/doc/hyperspec/... Eww does not do this conversion.

* The documentation for the variable explicitly mentions how the variable should be for a local copy of the HyperSpec. I quote:

    The root of the Common Lisp HyperSpec URL.
    If you copy the HyperSpec to your local system, set this variable to something like "file://usr/local/doc/HyperSpec/".

How to fix the problem:

Replace (setq common-lisp-hyperspec-root "/usr/share/doc/hyperspec/") with (setq common-lisp-hyperspec-root "file:///usr/share/doc/hyperspec/") on lines 7 and 11 of the start up file.