Fix: non-english broken plugins (#701)

* fix epiknovel

* fix: hasutl

* fix: Novelas Ligera

* fix: ReinoWuxia

* fix: Oasis

* fix: json script

* fix: Skynovels

* fix: Yuuki Tls

* fix: Agitoon

* fix: Syosetu

* fix: IndoWebNovel

* fix: Novel Ringan

* fix: Sakura Novel

* fix: Hako

* minor: type checking when PRing

test_web/static/js/index.js

@@ -56,8 +56,8 @@ const getHeaders = () => {
         if (nameSpan && valueSpan) {
             const { innerText: name } = nameSpan;
             const { innerText: value } = valueSpan;
-            if (typeof name === "string" && typeof value === "string") {
-                headers[name] = value;
+            if (typeof name === "string" && typeof value === "string" && value.trim()) {
+                headers[name] = value.trim();
             }
         }
     });