docs: apply suggestions from code review

Signed-off-by: Muhammad Haris <[email protected]>

Author: headlessNode

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

@@ -63,7 +63,7 @@ The function has the following parameters:
 -   **N**: number of indexed elements.
 -   **x**: input array.
 -   **strideX**: stride length.
--   **predicate**: predicate function.
+-   **clbk**: callback function.
 -   **thisArg**: execution context (_optional_).
 
 The callback function is provided the following arguments:

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

@@ -33,7 +33,7 @@
         Callback function.
 
     thisArg: any (optional)
-        Execution context.
+        Callback execution context.
 
     Returns
     -------
@@ -86,7 +86,7 @@
         Callback function.
 
     thisArg: any (optional)
-        Execution context.
+        Callback execution context.
 
     Returns
     -------