fix parentheses

notebooks/problem0076.ipynb

@@ -7,7 +7,7 @@
    "source": [
     "# [Counting Summations](https://projecteuler.net/problem=76)\n",
     "\n",
-    "We want $p(100) - 1$, where $p(n)$ is the [partition function](https://en.wikipedia.org/wiki/Partition_function_(number_theory)). We subtract 1 because $p(n)$ counts $n$ by itself as a partition of $n$, but we only want partitions composed of two or more numbers.\n",
+    "We want $p(100) - 1$, where $p(n)$ is the [partition function](https://w.wiki/EoNj). We subtract 1 because $p(n)$ counts $n$ by itself as a partition of $n$, but we only want partitions composed of two or more numbers.\n",
     "\n",
     "Guess what? SageMath has this built-in."
    ]