docs: refactor

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---

Author: headlessNode

lib/node_modules/@stdlib/blas/ext/base/ndarray/gfind-last-index/README.md

@@ -41,7 +41,6 @@ var gfindLastIndex = require( '@stdlib/blas/ext/base/ndarray/gfind-last-index' )
 Returns the index of the last element in a one-dimensional ndarray which passes a test implemented by a predicate function.
 
 ```javascript
-var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 var ndarray = require( '@stdlib/ndarray/base/ctor' );
 
 function isEven( v ) {
@@ -55,10 +54,9 @@ var idx = gfindLastIndex( [ x ], isEven );
 // returns 3
 ```
 
-If the function is unable to find a search element, the function returns `-1`.
+If no element passes a test implemented by a predicate function, the function returns `-1`.
 
 ```javascript
-var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 var ndarray = require( '@stdlib/ndarray/base/ctor' );
 
 function isEven( v ) {
@@ -100,11 +98,11 @@ var ctx = {
     'count': 0
 };
 
-var v = gfindLastIndex( [ x ], clbk, ctx );
+var v = gfindLastIndex( [ x ], isEven, ctx );
 // returns 3
 
 var count = ctx.count;
-// returns 4
+// returns 1
 ```
 
 </section>
@@ -115,8 +113,7 @@ var count = ctx.count;
 
 ## Notes
 
--  If provided an empty one-dimensional ndarray, the function returns `-1`.
--  A provided callback function should return a boolean value.
+-   If provided an empty one-dimensional ndarray, the function returns `-1`.
 
 </section>