Update app.py

app.py

@@ -395,13 +395,13 @@ def rag_pdf_ui(question: str, history: list) -> tuple:
     return response_text, file_paths
 
 # ── Text ───────────────────────────────────────────────────────────────────────
-Title = "# PG-ATLAS - POWERGRID - AI Technical Library & Assistance System"
+Title = "# PG-ATLAS : POWERGRID - AI Technical Library & Assistance System"
 
 Description = """
 ## Welcome to the AI-Powered Search Engine
 ### Model Technical Specifications | Engineering — Substation Department
 ---
-This intelligent assistant leverages **Large Language Model (LLM)** technology to provide precise, context-aware answers directly from POWERGRID's official documentation.
+This intelligent assistant leverages a **Large Language Model (LLM)** to provide precise, context-aware answers directly from POWERGRID's official documentation.
 
 **Document Coverage:**
 * 📑 Model Technical Specifications — Engineering (Substation) Department, POWERGRID