[online doc] fix version in html (#2328)

* fix online doc build

* fix version search

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: ZhangJianyu <zhang.jianyu@outlook.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

docs/build_docs/update_html.py

@@ -26,11 +26,12 @@ def update_version_link(version, folder_name, index_file):
 
     with open(index_file, "r") as f:
         index_buf = f.read()
-        key_str = '  <div class="version">\n                {}\n              </div>'.format(version)
-        version_list = """<div class="version">
+        key_str = '<div role="search">\n'
+        version_list = """            <div class="version">
               <a href="{}versions.html">{}▼</a>
               <p>Click link above to switch version</p>
-            </div>""".format(
+            </div>
+<div role="search">\n""".format(
             index_path, folder_name
         )
         # print(index_buf.find(key_str))
@@ -97,4 +98,5 @@ def help(me):
 
     folder = sys.argv[1]
     version = sys.argv[2]
+    print(f"run {sys.argv[0]} {sys.argv[1]} {sys.argv[2]}")
     main(folder, version)