Update app.py

app.py

@@ -862,9 +862,10 @@ async def get_categories():
 
 @app.get("/documentation", response_class=HTMLResponse)
 async def documentation():
-    with open("docs.html") as f:
+    docs_path = os.path.join(os.path.dirname(__file__), "docs.html")
+    with open(docs_path) as f:
         return f.read()
-    
+        
 @app.get("/", response_class=HTMLResponse)
 async def root():
     """Root endpoint with API documentation"""