Byte compile warnings

[Forge36]

■ Warning (comp): helpful.el:615:33: Warning: ‘elisp-eldoc-documentation-function’ is an obsolete function (as of 28.1); use ElDoc’s interfaces instead.
■ Warning (comp): helpful.el:1693:2: Warning: docstring has wrong usage of unescaped single quotes (use = or different quoting)
■ Warning (comp): helpful.el:1921:10: Warning: ‘help-fns--autoloaded-p’ called with 2 arguments, but accepts only 1
■ Warning (comp): helpful.el:1292:9: Warning: the function ‘shortdoc-function-groups’ is not known to be defined.