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>

disk/part.c

@@ -713,7 +713,7 @@ int part_get_info_by_name(struct blk_desc *dev_desc, const char *name,
  * @param[in] dev_part_str Input string argument, like "0.1#misc"
  * @param[out] dev_desc Place to store the device description pointer
  * @param[out] part_info Place to store the partition information
- * @return 0 on success, or a negative on error
+ * Return: 0 on success, or a negative on error
  */
 static int part_get_info_by_dev_and_name(const char *dev_iface,
 					 const char *dev_part_str,

disk/part_efi.c

@@ -331,7 +331,7 @@ static int part_test_efi(struct blk_desc *dev_desc)
  * set_protective_mbr(): Set the EFI protective MBR
  * @param dev_desc - block device descriptor
  *
- * @return - zero on success, otherwise error
+ * Return: - zero on success, otherwise error
  */
 static int set_protective_mbr(struct blk_desc *dev_desc)
 {