docs: fix copy

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

Author: kgryte

lib/node_modules/@stdlib/blas/ext/last-index-of/README.md

@@ -79,7 +79,7 @@ var idx = out.get();
 // returns -1
 ```
 
-By default, the function begins searching from the first element along the reduction dimension. To begin searching from a different index, provide a `fromIndex` argument.
+By default, the function begins searching from the last element along the reduction dimension. To begin searching from a different index, provide a `fromIndex` argument.
 
 ```javascript
 var array = require( '@stdlib/ndarray/array' );