address review comments

Author: c8ef

libc/utils/docgen/endian.yaml

@@ -5,4 +5,28 @@ macros:
     in-latest-posix: ''
   BYTE_ORDER:
     in-latest-posix: ''
+  be16toh:
+    in-latest-posix: ''
+  be32toh:
+    in-latest-posix: ''
+  be64toh:
+    in-latest-posix: ''
+  htobe16:
+    in-latest-posix: ''
+  htobe32:
+    in-latest-posix: ''
+  htobe64:
+    in-latest-posix: ''
+  htole16:
+    in-latest-posix: ''
+  htole32:
+    in-latest-posix: ''
+  htole64:
+    in-latest-posix: ''
+  le16toh:
+    in-latest-posix: ''
+  le32toh:
+    in-latest-posix: ''
+  le64toh:
+    in-latest-posix: ''