Happymh: fix referer for pageListRequest (#2984)

src/zh/happymh/build.gradle

@@ -1,7 +1,7 @@
 ext {
     extName = 'Happymh'
     extClass = '.Happymh'
-    extVersionCode = 10
+    extVersionCode = 11
 }
 
 apply from: "$rootDir/common.gradle"

src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/Happymh.kt

@@ -142,10 +142,12 @@ class Happymh : HttpSource(), ConfigurableSource {
 
     override fun pageListRequest(chapter: SChapter): Request {
         val url = baseUrl + chapter.url
+        val comicId = chapter.url.substringAfter("code=").substringBefore("&")
+        val chapterId = chapter.url.substringAfter("cid=").substringBefore("&")
         // Some chapters return 403 without this header
         val header = headersBuilder()
             .add("X-Requested-With", "XMLHttpRequest")
-            .set("Referer", url)
+            .set("Referer", "$baseUrl/reads/$comicId/$chapterId")
             .build()
         return GET(url, header)
     }