Add plugin tasks (#651)

ui/v2.5/src/components/Help/Manual.tsx

@@ -8,6 +8,7 @@ import Configuration from "src/docs/en/Configuration.md";
 import Interface from "src/docs/en/Interface.md";
 import Galleries from "src/docs/en/Galleries.md";
 import Scraping from "src/docs/en/Scraping.md";
+import Plugins from "src/docs/en/Plugins.md";
 import Contributing from "src/docs/en/Contributing.md";
 import SceneFilenameParser from "src/docs/en/SceneFilenameParser.md";
 import KeyboardShortcuts from "src/docs/en/KeyboardShortcuts.md";
@@ -69,6 +70,11 @@ export const Manual: React.FC<IManualProps> = ({ show, onClose }) => {
       title: "Metadata Scraping",
       content: Scraping,
     },
+    {
+      key: "Plugins.md",
+      title: "Plugins",
+      content: Plugins,
+    },
     {
       key: "KeyboardShortcuts.md",
       title: "Keyboard Shortcuts",