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>
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 1d45fb5..aa78d41 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -850,7 +850,7 @@
  * @param mtd an MTD device
  * @param offset offset in flash
  * @param length image length
- * @return image length including bad blocks in *len_incl_bad and whether or not
+ * Return: image length including bad blocks in *len_incl_bad and whether or not
  *         the length returned was truncated in *truncated
  */
 void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset,