Update wording

Author: Planeshifter

lib/node_modules/@stdlib/math/base/special/spence/README.md

@@ -30,7 +30,7 @@ The dilogarithm is defined as
 
 <!-- </equation> -->
 
-or alternatively as
+or also alternatively as
 
 <!-- <equation class="equation" label="eq:dilogarithm_alt" align="center" raw="\int _{1}^{v}{\frac {\ln t}{1-t}}dt=\operatorname {Li} _{2}(1-v)." alt="Alternative definition of dilogarithm."> -->