docs: fix description

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

Author: kgryte

lib/node_modules/@stdlib/stats/midrange/docs/repl.txt

@@ -11,7 +11,8 @@
         Function options.
 
     options.dtype: string (optional)
-        Output array data type. Must be a real-valued or "generic" data type.
+        Output array data type. Must be a real-valued floating-point or
+        "generic" data type.
 
     options.dims: Array<integer> (optional)
         List of dimensions over which to perform a reduction. If not provided,