chore: reorder variable declarations

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

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/normal/logpdf/README.md

@@ -216,9 +216,9 @@ static double random_uniform( const double min, const double max ) {
 }
 
 int main( void ) {
-    double x;
-    double mu;
     double sigma;
+    double mu;
+    double x;
     double y;
     int i;