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>

cmd/acpi.c

@@ -39,7 +39,7 @@ static void dump_hdr(struct acpi_table_header *hdr)
  * find_table() - Look up an ACPI table
  *
  * @sig: Signature of table (4 characters, upper case)
- * @return pointer to table header, or NULL if not found
+ * Return: pointer to table header, or NULL if not found
  */
 struct acpi_table_header *find_table(const char *sig)
 {