Update the 05_09 var name

Author: a-magdy

examples/ch05/snippets_ipynb/05_09.ipynb

@@ -148,7 +148,7 @@
    "outputs": [],
    "source": [
     "if key in numbers:\n",
-    "    print(f'found {key} at index {numbers.index(search_key)}')\n",
+    "    print(f'found {key} at index {numbers.index(key)}')\n",
     "else:\n",
     "    print(f'{key} not found')"
    ]
@@ -204,4 +204,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}

examples/ch05/snippets_py/05_09.py

@@ -29,7 +29,7 @@
 key = 1000
 
 if key in numbers:
-    print(f'found {key} at index {numbers.index(search_key)}')
+    print(f'found {key} at index {numbers.index(key)}')
 else:
     print(f'{key} not found')