chore: update wording

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/chisquare/stdev/README.md

@@ -144,7 +144,7 @@ for ( i = 0; i < 10; i++ ) {
 
 #### stdlib_base_dists_chisquare_stdev( k )
 
-Evaluates the [standard deviation][stdev] of a [chi-squared][chisquare-distribution] distribution with degrees of freedom `k`.
+Returns the [standard deviation][stdev] of a [chi-squared][chisquare-distribution] distribution with degrees of freedom `k`.
 
 ```c
 double out = stdlib_base_dists_chisquare_stdev( 9.0 );