Fix link reference error

Author: Jacobluke-

dabest/_stats_tools/effsize.py

@@ -221,7 +221,7 @@ def cohens_h(control:list|tuple|np.ndarray,
             )->float:
     '''
     Computes Cohen's h for test v.s. control.
-    See [here](https://en.wikipedia.org/wiki/Cohen%27s_h for reference.)
+    See [here](https://en.wikipedia.org/wiki/Cohen%27s_h) for reference.
     
     `Notes`:
     

nbs/API/effsize.ipynb

@@ -301,7 +301,7 @@
     "            )->float:\n",
     "    '''\n",
     "    Computes Cohen's h for test v.s. control.\n",
-    "    See [here](https://en.wikipedia.org/wiki/Cohen%27s_h for reference.)\n",
+    "    See [here](https://en.wikipedia.org/wiki/Cohen%27s_h) for reference.\n",
     "    \n",
     "    `Notes`:\n",
     "    \n",