bug#34689: 27.0.50; Misprint in Calc documentation

[Eli Zaretskii]

> From: Brett Presnell <presnell@ufl.edu>
> Date: Thu, 28 Feb 2019 15:43:06 -0500
> 
> In section 3.1.2 (Algebraic-Style Calculations) of the documentation for
> calc, there is a missing right-paren where it is stated that
> 
>      2 + 3*4*5 / 6*7^8 - 9
> 
> is equivalent to
> 
>      2 + ((3*4*5) / (6*(7^8)) - 9
> 
> Of course the second expression should be either
> 
>      2 + ((3*4*5) / (6*(7^8))) - 9

Thanks, fixed.