docs: rename variable

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/blas/ext/base/gfind-last-index/docs/repl.txt

@@ -96,10 +96,9 @@
 
     Examples
     --------
-    // Standard Usage:
-    > function isEven( v ) { return v % 2.0 === 0.0; };
+    > function f( v ) { return v % 2.0 === 0.0; };
     > var x = [ 1.0, 2.0, -3.0, 4.0, -5.0, -6.0 ];
-    > {{alias}}.ndarray( 4, x, 1, 2, isEven )
+    > {{alias}}.ndarray( 4, x, 1, 2, f )
     3
 
     See Also