docs: update type

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---

Author: kgryte

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

@@ -38,7 +38,7 @@
     options: Object (optional)
         Function options.
 
-    options.dtype: string (optional)
+    options.dtype: string|DataType (optional)
         Output array data type. Must be an integer index or "generic" data type.
 
     options.dim: integer (optional)

lib/node_modules/@stdlib/blas/ext/index-of/lib/base.js

@@ -65,7 +65,7 @@ var table = {
 * @param {ndarrayLike} fromIndex - indices from which to begin searching
 * @param {Options} [options] - function options
 * @param {IntegerArray} [options.dims] - list of dimensions over which to perform operation
-* @param {string} [options.dtype] - output ndarray data type
+* @param {*} [options.dtype] - output ndarray data type
 * @throws {TypeError} first argument must be an ndarray-like object
 * @throws {TypeError} second argument must be either an ndarray-like object
 * @throws {TypeError} third argument must be either an ndarray-like object

lib/node_modules/@stdlib/blas/ext/index-of/lib/main.js

@@ -51,7 +51,7 @@ var DEFAULT_DTYPE = defaults.get( 'dtypes.integer_index' );
 * @param {Options} [options] - function options
 * @param {integer} [options.dim=-1] - dimension over which to perform operation
 * @param {boolean} [options.keepdims=false] - boolean indicating whether the reduced dimensions should be included in the returned ndarray as singleton dimensions
-* @param {string} [options.dtype] - output ndarray data type
+* @param {*} [options.dtype] - output ndarray data type
 * @throws {TypeError} first argument must be an ndarray-like object
 * @throws {TypeError} second argument must be either an ndarray-like object or a scalar value
 * @throws {TypeError} third argument must be either an ndarray-like object or an integer