Enhance docstring in format_search_results_json function to provide clearer input guidance for users

app.py

@@ -302,7 +302,8 @@ def find_synergistic_papers(abstract: str, limit=25) -> list[dict]:
 
 
 def format_search_results_json(abstract: str) -> str:
-    """Finds papers with Swanson-style bridges.
+    """Finds papers with Swanson-style bridges. Input your abstract or abstract-style description of your research
+    question, and the system will return a list of papers with Swanson-style bridges.
 
     Args:
         abstract (str): The abstract of the paper to find connections for, or a description of the research question.