bug#63800: 30.0.50; [ELPA] Inaccurate installation instructions for built-in packages

[Ihor Radchenko]

Hi,

All the Emacs packages distributed via ELPA share the same installation
instruction:

    To install this package, run in Emacs:
    
    M-x package-install RET <package-name> RET

However, this command will fail for built-in packages. This is
particularly a problem for older (<29) Emacs versions.

May the instruction be corrected?

Original discussion is for Org, but the same will apply for other
packages distributed with Emacs. 
https://orgmode.org/list/878rdbwlf3.fsf@localhost

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>