doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

include/crypt.h

@@ -9,6 +9,6 @@
  * @equal       Pointer to an int where the result is stored
  *                 '0' = unequal
  *                 '1' = equal
- * @return 0 on success, error code of errno else
+ * Return: 0 on success, error code of errno else
  */
 int crypt_compare(const char *should, const char *passphrase, int *equal);