chore: fix C lint errors

PR-URL: #6938
Closes: #6935
Reviewed-by: Athan Reines <[email protected]>

Author: GeoDaoyu

lib/node_modules/@stdlib/stats/base/dvarmpn/examples/c/example.c

@@ -22,7 +22,7 @@
 
 int main( void ) {
 	// Create a strided array:
-	double x[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 };
+	const double x[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 };
 
 	// Specify the number of elements:
 	int64_t N = 4;