Replace & with &amp in Readme Overview

Author: jairmyree

eng/pipelines/scripts/generate_overview_from_readme.py

@@ -49,8 +49,8 @@ def generate_overview(readme_file, version, overview_file_path):
         # the contents of the code fence. Replace '&' with '&' to avoid issues with the HTML parser.
         cleaned_readme_content_lines = []
         for line in raw_readme_content_lines:
-            adjusted_line = re.sub(pattern='\&', repl='&', string=line, flags=re.UNICODE) 
-            cleaned_readme_content_lines.append(re.sub(pattern="``` *java +[a-zA-Z0-9.#\-_]*", repl="```java", string=adjusted_line, flags=re.UNICODE))
+            adjusted_line = re.sub(pattern='\\&', repl='&amp', string=line, flags=re.UNICODE) 
+            cleaned_readme_content_lines.append(re.sub(pattern="``` *java +[a-zA-Z0-9.#\\-_]*", repl="```java", string=adjusted_line, flags=re.UNICODE))
 
         readme_content = ''.join(cleaned_readme_content_lines)