Update app.py

app.py

@@ -23,15 +23,15 @@ def download_image(image_url):
 class PDF(FPDF):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        self.set_font('Arial', 'B', 15)
+        self.set_font('/home/user/app/malgun.ttf', '', 12)
         
     def chapter_title(self, num, label):
-        self.set_font('Arial', 'B', 12)
+        self.set_font('/home/user/app/malgun.ttf', '', 15)
         self.cell(0, 10, f"Chapter {num} : {label}", 0, 1, 'C')
         self.ln(10)
 
     def chapter_body(self, body, image_url):
-        self.set_font('Arial', '', 12)
+        self.set_font('/home/user/app/malgun.ttf', '', 12)
         self.multi_cell(0, 10, body)
         self.image(image_url, x=10, w=100)
         self.ln(60)