Fix search page error

Author: Yolo1105

src/pages/search.tsx

@@ -112,7 +112,11 @@ export default function SearchPage() {
       <main className="container margin-vert--lg">
         <Heading as="h1">Search Results</Heading>
 
-        <form action="/search" method="get" style={{ marginBottom: "1.5rem" }}>
+        <form
+          action={`${siteConfig.baseUrl}search/`}
+          method="get"
+          style={{ marginBottom: "1.5rem" }}
+        >
           <input
             aria-label="Search docs"
             className="navbar__search-input"

src/theme/SearchBar/index.tsx

@@ -50,7 +50,7 @@ const Search = (props: SearchBarProps) => {
         const query = _input.getVal();
         _input.setVal("");
         _event.target.blur();
-        history.push(`/search?q=${encodeURIComponent(query)}`);
+        history.push(`${baseUrl}search/?q=${encodeURIComponent(query)}`);
       },
       maxHits: options.maxHits,
     });