Fix signature

Author: kgryte

lib/node_modules/@stdlib/array/base/incrspace/README.md

@@ -30,7 +30,7 @@ limitations under the License.
 var incrspace = require( '@stdlib/array/base/incrspace' );
 ```
 
-#### incrspace( start, stop\[, increment] )
+#### incrspace( start, stop, increment )
 
 Generates a linearly spaced numeric `array` according to a provided `increment`.