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/common/edid.c b/common/edid.c
index fa85bcd..556c4e3 100644
--- a/common/edid.c
+++ b/common/edid.c
@@ -139,7 +139,7 @@
 /**
  * Check if HDMI vendor specific data block is present in CEA block
  * @param info	CEA extension block
- * @return true if block is found
+ * Return: true if block is found
  */
 static bool cea_is_hdmi_vsdb_present(struct edid_cea861_info *info)
 {
@@ -274,7 +274,7 @@
  * Snip the tailing whitespace/return of a string.
  *
  * @param string	The string to be snipped
- * @return the snipped string
+ * Return: the snipped string
  */
 static char *snip(char *string)
 {