Update README.md

Signed-off-by: yuvi-mittal <[email protected]>

Author: yuvimittal

lib/node_modules/@stdlib/stats/base/dists/planck/variance/README.md

@@ -148,7 +148,7 @@ for ( i = 0; i < lambda.length; i++ ) {
 
 #### stdlib_base_dists_planck_variance( lambda )
 
-Returns the variance for planck distribution with shape parameter `λ`.
+Returns the [variance][variance] of a Planck distribution with shape parameter `λ`.
 
 ```c
 double out = stdlib_base_dists_planck_variance( 0.1 );
@@ -185,10 +185,12 @@ double stdlib_base_dists_planck_variance( const double lambda );
 #include "stdlib/stats/base/dists/planck/variance.h"
 #include <stdlib.h>
 #include <stdio.h>
+
 static double random_uniform( const double min, const double max ) {
     double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
     return min + ( v*(max-min) );
 }
+
 int main( void ) {
     double lambda;
     double y;