docs: add smoke tests for fmodbf16 math function

Signed-off-by: Krishna Pandey <[email protected]>

Author: krishna2803

libc/docs/headers/math/index.rst

@@ -175,7 +175,7 @@ Basic Operations
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
 | fminimum_num     | |check|          | |check|         | |check|                | |check|              | |check|                | |check|                | 7.12.12.9              | F.10.9.5                   |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| fmod             | |check|          | |check|         | |check|                | |check|              | |check|                |                        | 7.12.10.1              | F.10.7.1                   |
+| fmod             | |check|          | |check|         | |check|                | |check|              | |check|                | |check|                | 7.12.10.1              | F.10.7.1                   |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
 | fmul             | N/A              | |check|         | |check|                | N/A                  | |check|\*              | N/A                    | 7.12.14.3              | F.10.11                    |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+