Move DOCX template path to src directory for better organization

src/app.py

@@ -15,7 +15,7 @@ app = FastAPI()
 
 pypandoc.download_pandoc()
 
-template_path = "template.docx"
+template_path = "src/template.docx"
 DOC = Document(template_path)
 
 class Email(str, Enum):
@@ -62,7 +62,7 @@ async def generate_proposal(data: dict):
                     architecture_diagram_path = temp_file.name
         except httpx.HTTPError as e:
             raise HTTPException(
-                status_code=500, 
+                status_code=500,
                 detail=f"Failed to generate architecture diagram: {str(e)}"
             )