Apply suggestions from code review

Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/math/base/special/pow/README.md

@@ -153,11 +153,11 @@ out = stdlib_base_pow( 4.0, 0.5 );
 
 The function accepts the following arguments:
 
--   **b**: `[in] double` input value.
--   **x**: `[in] double` input value.
+-   **base**: `[in] double` base.
+-   **exponent**: `[in] double` exponent.
 
 ```c
-double stdlib_base_pow( const double b, const double x );
+double stdlib_base_pow( const double base, const double exponent );
 ```
 
 </section>
@@ -184,9 +184,9 @@ double stdlib_base_pow( const double b, const double x );
 #include <stdio.h>
 
 int main( void ) {
+    double out;
     double b;
     double x;
-    double out;
     int i;
 
     for ( i = 0; i < 100; i++ ) {