Rephrase for increased clarity

Author: vterron

[2018] Python Heaps-ters/python-heaps-ters.ipynb

@@ -1279,7 +1279,7 @@
     "\n",
     "- For a deletion, remove the root and replace it with the *last* element in the tree.\n",
     "- This may violate the heap invariant...\n",
-    "- ... so we compare the minimum of its two children:\n",
+    "- ... so we compare the new root with the smallest of its two children:\n",
     "  1. If it's $\\gt$ than the (smallest) children, swap them.\n",
     "  2. Keep percolating down until the invariant is restablished.\n",
     "  \n",