docs: update descriptions

Signed-off-by: Philipp Burckhardt <[email protected]>

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/logistic/mgf/README.md

@@ -180,7 +180,7 @@ for ( i = 0; i < 10; i++ ) {
 
 #### stdlib_base_dists_logistic_mgf( t, mu, s )
 
-Returns the mgf for a logistic distribution with value `t`, location `mu` and scale `s`.
+Evaluates the logarithm of the [moment-generating function][mgf] (MGF) for a [logistic][logistic-distribution] distribution with parameters `mu` (location parameter) and `s` (scale parameter).
 
 ```c
 double out = stdlib_base_dists_logistic_mgf( 0.9, 0.0, 1.0 );