Apply PR suggestions thanks @cnjack!

Author: qdm12

internal/settings/providers/aliyun/auth.go

@@ -13,13 +13,13 @@ import (
 func sign(method string, urlValues url.Values, accessKeySecret string) {
 	sortedParams := make(sort.StringSlice, 0, len(urlValues))
 	for key, values := range urlValues {
-		s := key + "=" + values[0]
+		s := url.QueryEscape(key) + "=" + url.QueryEscape(values[0])
 		sortedParams = append(sortedParams, s)
 	}
 	sortedParams.Sort()
 
 	stringToSign := strings.ToUpper(method) + "&%2F&" +
-		strings.Join(sortedParams, "&")
+		url.QueryEscape(strings.Join(sortedParams, "&"))
 
 	key := []byte(accessKeySecret + "&")
 	hmac := hmac.New(sha1.New, key)