diff --git a/main.ipynb b/main.ipynb
index 5b89e61..308b323 100644
--- a/main.ipynb
+++ b/main.ipynb
@@ -89,7 +89,7 @@
     "\n",
     "Even a dynamically typed language can sometimes, at least, declare types. Python has built-in support for that via annotations.\n",
     "\n",
-    "***prerequisites:** [functions](https://docs.python.org/3/tutorial/controlflow.html#defining-functions)*\n",
+    "_**prerequisites:** [functions](https://docs.python.org/3/tutorial/controlflow.html#defining-functions)*_\n",
     "\n",
     "***also mentioned here:** [`match`](https://docs.python.org/3/tutorial/controlflow.html#match-statements)*"
    ]