Update presentation_api.py

presentation_api.py

@@ -78,9 +78,9 @@ prompt = ChatPromptTemplate.from_messages([
     3. Then use create_slide tool for each slide in sequence
     4. Guide the user through the presentation creation process
     
-    Guidelines for Presentation Slides Creation
-    {{PRESENTATION_SYSTEM_PROMPT}}
-    Today's date is {{datetime.now().strftime('%Y-%m-%d')}}"""),
+    Guidelines for Presentation Slides Creation"""+\
+    PRESENTATION_SYSTEM_PROMPT+\
+    """Today's date is {{datetime.now().strftime('%Y-%m-%d')}}"""),
     ("placeholder", "{messages}"),
 ])