arabic font bug fix

app.py

@@ -195,8 +195,8 @@ def run_main_ex(word, semantic_concept, script, font_selector, num_steps, seed):
 def run_main_app(semantic_concept, word, script, font_selected, prompt_suffix, num_steps, seed, is_seed_rand, dist_loss_weight, pixel_dist_kernel_blur, pixel_dist_sigma, angeles_w, example=0):
     
     if font_selected.lower() != "default":
-        font_key, font_val = font_selected.lower().split(":")
-        font_key = font_key.strip()
+        font_key, font_val = font_selected.split(":")
+        font_key = font_key.lower().strip()
         font_val = font_val.strip()
     else:
         font_key = "default"