chore: update markdown description

Author: Neerajpathak07

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

@@ -189,7 +189,7 @@ for ( i = 0; i < 10; i++ ) {
 
 #### stdlib_base_dists_erlang_mgf( t, k, lambda )
 
-Evaluates the moment-generating function (mgf) for a Erlang distribution with parameters shape parameter `k` and rate parameter `lambda`.
+Evaluates the [moment-generating function][mgf] (mgf) for an [Erlang][erlang-distribution] distribution with parameters `k` (shape parameter) and `lambda` (rate parameter).
 
 ```c
 double y = stdlib_base_dists_erlang_mgf( 0.3, 1, 1.0 );