Fix typo

Author: jank324

tutorial.ipynb

@@ -362,7 +362,7 @@
     "- First publicly released version 0.5.12 in June 2022\n",
     "- First fully differentiable release 0.6 in Septemeber 2023\n",
     "- Merged with Bmad-X beginning March 2024\n",
-    "- Fully vectorised release 0.7 Decmeber 2024\n",
+    "- Fully vectorised release 0.7 in Decmeber 2024\n",
     "\n",
     "### Cheetah in numbers\n",
     "\n",