fix: minor cleanup

---
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---

Author: Lokeshranjan8

lib/node_modules/@stdlib/stats/base/dists/frechet/pdf/README.md

@@ -148,7 +148,7 @@ var alpha = uniform( 100, 0.0, 10.0, opts );
 var s = uniform( 100, 0.0, 10.0, opts );
 var m = uniform( 100, 0.0, 10.0, opts );
 
-logEachMap( 'x: %0.4f, α: %0.4f, s: %0.4f, m: %0.4f, pdf(X;α,s,m): %0.4f', x, alpha, s, m, pdf );
+logEachMap( 'x: %0.4f, α: %0.4f, s: %0.4f, m: %0.4f, f(x;α,s,m): %0.4f', x, alpha, s, m, pdf );
 ```
 
 </section>

lib/node_modules/@stdlib/stats/base/dists/frechet/pdf/examples/index.js

@@ -30,4 +30,4 @@ var alpha = uniform( 100, 0.0, 10.0, opts );
 var s = uniform( 100, 0.0, 10.0, opts );
 var m = uniform( 100, 0.0, 10.0, opts );
 
-logEachMap( 'x: %0.4f, α: %0.4f, s: %0.4f, m: %0.4f, pdf(X;α,s,m): %0.4f', x, alpha, s, m, pdf );
+logEachMap( 'x: %0.4f, α: %0.4f, s: %0.4f, m: %0.4f, f(x;α,s,m): %0.4f', x, alpha, s, m, pdf );