bug#40890: Add missing word "the" to file "custom.texi".

[Stefan Kangas]

ej32u@protonmail.com writes:

> The word "the" was missing. Attached is a patch file.

Thanks for pointing this out.

>  values.  When in doubt, use @kbd{C-h v} (@code{describe-variable}) to
> -check the variable's documentation string to see kind of value it
> +check the variable's documentation string to see the kind of value it
>  expects (@pxref{Examining}).

Would that be better if written like this?

 values.  When in doubt, use @kbd{C-h v} (@code{describe-variable}) to
-check the variable's documentation string to see kind of value it
+check the variable's documentation string to see the kind of value it
 expects (@pxref{Examining}).

Best regards,
Stefan Kangas