docs: update posix docs with pthread_equal

add pthread_equal to supported api list

Signed-off-by: Jai Arora <[email protected]>

Author: jaiiarora

doc/services/portability/posix.rst

@@ -157,7 +157,7 @@ multiple processes.
     pthread_condattr_init(),yes
     pthread_create(),yes
     pthread_detach(),yes
-    pthread_equal(),
+    pthread_equal(),yes
     pthread_exit(),yes
     pthread_getspecific(),yes
     pthread_join(),yes