replaced missing colon

Author: dmarx

pyttitools-PYTTI_local.ipynb

@@ -95,7 +95,7 @@
         "try:\n",
         "    assert isinstance(CONFIG_OVERRIDES, list)\n",
         "except AssertionError:\n",
-        "    if is_instance(CONFIG_OVERRIDES, str)\n",
+        "    if is_instance(CONFIG_OVERRIDES, str):\n",
         "    logger.warning(\n",
         "        \"The CONFIG_OVERRIDES variable should be a list of filenames.\"\n",
         "        \"I noticed you set this variable to a string. I'll wrap that in \"\n",
@@ -648,7 +648,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.9.7"
+      "version": "3.9.9"
     }
   },
   "nbformat": 4,