Update lib/node_modules/@stdlib/stats/incr/nanmmeanstdev/README.md

Co-authored-by: Shabareesh Shetty <[email protected]>
Signed-off-by: Muhmmad Saad <[email protected]>

Author: saad-imran-dev

lib/node_modules/@stdlib/stats/incr/nanmmeanstdev/README.md

@@ -124,6 +124,7 @@ out = accumulator();
 
 ## Notes
 
+- Input values are **not** type checked. If non-numeric inputs are possible, you are advised to type check and handle accordingly **before** passing the value to the accumulator function.
 -   As `W` values are needed to fill the window buffer, the first `W-1` returned values are calculated from smaller sample sizes. Until the window is full, each returned value is calculated from all provided values.
 
 </section>