fix(recipe): Refactor get_recipe_from_xiachufang to handle steps without images

.vscode/settings.json

@@ -1,5 +1,6 @@
 {
   "conventionalCommits.scopes": [
-    "api"
+    "api",
+    "recipe"
   ]
 }

recipe.py

@@ -15,6 +15,11 @@ def get_recipe_from_xiachufang(url):
 
     steps = []
     for step in soup.find('div', class_='steps').find('ol').find_all('li'):
-      steps.append([step.find('p').text.strip(), step.find('img')['src']])
+      step_text = step.find('p').text.strip()
+      step_img = step.find('img')
+      if step_img:
+        steps.append([step_text, step_img['src']])
+      else:
+        steps.append([step_text])
 
     return {'name': name, 'ingredients': ingredients, 'steps': steps}