fix: correct variable name typo in hornerDescending function

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
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    status: passed
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    status: passed
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    status: passed
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    status: passed
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    status: passed
---

Author: Planeshifter

lib/node_modules/@stdlib/math/base/special/roundf/examples/c/example.c

@@ -24,7 +24,7 @@ int main( void ) {
 
 	float v;
 	int i;
-	for ( i = 0; i < 1; i++ ) {
+	for ( i = 0; i < 10; i++ ) {
 		v = stdlib_base_roundf( x[ i ] );
 		printf( "roundf(%f) = %f\n", x[ i ], v );
 	}

lib/node_modules/@stdlib/math/base/tools/evalrational-compile-c/docs/types/index.d.ts

@@ -32,7 +32,7 @@ interface Options {
 	dtype?: 'double' | 'float';
 
 	/**
-	* Function name. Default: `'evalpoly'`.
+	* Function name. Default: `'evalrational'`.
 	*/
 	name?: string;
 }

lib/node_modules/@stdlib/math/base/tools/evalrational-compile-c/lib/main.js

@@ -154,7 +154,7 @@ function hornerDescending( x ) {
 	}
 	str += '{{dtype_suffix}}';
 	for ( i = m-1; i >= 0; i-- ) {
-		str += ' + (ix * ';
+		str += ' + (x * ';
 		if ( i > 0 ) {
 			str += '(';
 		}