Update lib/node_modules/@stdlib/stats/base/dmeanpn/README.md

Co-authored-by: Neeraj Pathak <[email protected]>
Signed-off-by: Dhruv/ <[email protected]>

Author: DhruvArvindSingh

lib/node_modules/@stdlib/stats/base/dmeanpn/README.md

@@ -250,6 +250,9 @@ int main( void ) {
     // Specify the number of elements:
     const int N = 4;
 
+    // Specify the stride length:
+    const int strideX = 2;
+    
     // Compute the arithmetic mean:
     double v = stdlib_strided_dmeanpn( N, x, strideX );