bug#46926: Remove the quotes from highlighted/linked symbols when displaying docs

[scame]

>
> Are we disputing anything about`M-o M-o'? Questions were raised about what 
> the use case of`font-lock-fontify-block' was (because it's a
> command that some people have never used, and some people seem to find
> very useful). Which is one of the things this process seems to be handy
> at clarifying.
>

Could you all who discuss the M-o problem take this discussion off from
bug46926's thread? For those of us who follow this specific bug, details
of the M-o  discussion is unrelated noise. Thanks.