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/boot/image-fit.c b/boot/image-fit.c
index b629339..f6594e0 100644
--- a/boot/image-fit.c
+++ b/boot/image-fit.c
@@ -1595,7 +1595,7 @@
  *
  * @fit: FIT to check
  * @parent: Parent node to check
- * @return 0 if OK, -EADDRNOTAVAIL is a node has a name containing '@'
+ * Return: 0 if OK, -EADDRNOTAVAIL is a node has a name containing '@'
  */
 static int fdt_check_no_at(const void *fit, int parent)
 {
@@ -1961,7 +1961,7 @@
 /**
  * fit_get_image_type_property() - get property name for IH_TYPE_...
  *
- * @return the properly name where we expect to find the image in the
+ * Return: the properly name where we expect to find the image in the
  * config node
  */
 static const char *fit_get_image_type_property(int type)