chore: fix C lint errors (issue #8895)

Author: GeoDaoyu

lib/node_modules/@stdlib/number/float64/base/get-high-word/README.md

@@ -144,7 +144,7 @@ void stdlib_base_float64_get_high_word( const double x, uint32_t *high );
 #include <stdio.h>
 
 int main( void ) {
-    double x[] = { 3.14, -3.14, 0.0, 0.0/0.0 };
+    const double x[] = { 3.14, -3.14, 0.0, 0.0/0.0 };
 
     uint32_t high;
     int i;

lib/node_modules/@stdlib/number/float64/base/get-high-word/examples/c/example.c

@@ -21,7 +21,7 @@
 #include <stdio.h>
 
 int main( void ) {
-	double x[] = { 3.14, -3.14, 0.0, 0.0/0.0 };
+	const double x[] = { 3.14, -3.14, 0.0, 0.0/0.0 };
 
 	uint32_t high;
 	int i;