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/net/octeontx2/rvu_common.c b/drivers/net/octeontx2/rvu_common.c
index 173b28b..4d8173f 100644
--- a/drivers/net/octeontx2/rvu_common.c
+++ b/drivers/net/octeontx2/rvu_common.c
@@ -41,7 +41,7 @@
  * @param	inst_size	Size of each instruction
  * @param	res_size	Size of each result
  *
- * @return	-ENOMEM on error, 0 on success
+ * Return:	-ENOMEM on error, 0 on success
  */
 int rvu_aq_alloc(struct admin_queue *aq, unsigned int qsize,
 		 size_t inst_size, size_t res_size)