fix(docs): replace Chinese comment with English in SSR docs (#4071)

The hydration code example in the English SSR docs for current,
v0.22, and v0.23 had a Chinese comment that was accidentally
carried over from the i18n source.

Author: Madoshakalaka

website/docs/advanced-topics/server-side-rendering.mdx

@@ -207,7 +207,8 @@ fn App() -> Html {
 fn main() {
     let renderer = Renderer::<App>::new();
 
-    // 直接在 body 元素下注水，并移除可能有的任何尾随元素。
+    // hydrates everything under body element, removes trailing
+    // elements (if any).
     renderer.hydrate();
 }
 ```

website/versioned_docs/version-0.22/advanced-topics/server-side-rendering.mdx

@@ -207,7 +207,8 @@ fn App() -> Html {
 fn main() {
     let renderer = Renderer::<App>::new();
 
-    // 直接在 body 元素下注水，并移除可能有的任何尾随元素。
+    // hydrates everything under body element, removes trailing
+    // elements (if any).
     renderer.hydrate();
 }
 ```

website/versioned_docs/version-0.23/advanced-topics/server-side-rendering.mdx

@@ -207,7 +207,8 @@ fn App() -> Html {
 fn main() {
     let renderer = Renderer::<App>::new();
 
-    // 直接在 body 元素下注水，并移除可能有的任何尾随元素。
+    // hydrates everything under body element, removes trailing
+    // elements (if any).
     renderer.hydrate();
 }
 ```