refactor: update docstring for create_svg_viewer_html function to improve clarity

app.py

@@ -236,7 +236,7 @@ def create_error_html(message: str) -> str:
 
 
 def create_svg_viewer_html(svg_content: str) -> str:
-    """Decomposed SVG를 인터랙티브(외곽선 하이라이트/툴팁) 미리보기로 iframe에서 렌더링"""
+    """DECOMPOSED SVG Rendering in IFRAME with preview"""
     svg = (svg_content or "").strip()
     if not (svg.startswith("<svg") and svg.endswith("</svg>")):
         return create_error_html("Invalid SVG format")