docs: type method documentation

Author: ahmad-kashkoush

lib/node_modules/@stdlib/array/fixed-endian-factory/README.md

@@ -515,6 +515,38 @@ var idx = arr.indexOf( 5.0 );
 // returns -1
 ```
 
+<a name="method-includes"></a>
+
+#### TypedArrayFE.prototype.includes( searchElement\[, fromIndex] )
+
+Returns `true` if element can be found.
+
+```javascript
+var Float64ArrayFE = fixedEndianFactory( 'float64' );
+
+var arr = new Float64ArrayFE( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 2.0 ] );
+
+var idx = arr.includes( 2.0 );
+// returns true
+
+idx = arr.includes( 2.0, 2 );
+// returns true
+
+idx = arr.includes( 2.0, -4 );
+// returns true
+```
+
+If `searchElement` is not present in the array, the method returns `false`.
+
+```javascript
+var Float64ArrayFE = fixedEndianFactory( 'float64' );
+
+var arr = new Float64ArrayFE( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 2.0 ] );
+
+var idx = arr.includes( 5.0 );
+// returns false
+```
+
 <a name="method-map"></a>
 
 #### TypedArray.prototype.map( callbackFn\[, thisArg] )