Update numberFormat.md

Author: DeveloperTryingToCodeLikeOtherOfThem

docs/numberFormat.md

@@ -1,2 +1,8 @@
 ## Number Format
-The **Number Format** specifically formats a [number](/types/number)
+The **Number Format** specifies the format's [number](https://github.com/microsoft/pxt-common-packages/types/number).
+``` sig
+   Buffer.sizeOfNumberFormat(NumberFormat.Int8LE);
+```
+
+## See also
+[buffers](https://github.com/DeveloperTryingToCodeLikeOtherOfThem/pxt-hardware-programming-docs/blob/main/docs/buffers.md)