Update docs/examples/example_gridsearch.ipynb

Co-authored-by: Kevin Klein <[email protected]>

docs/examples/example_gridsearch.ipynb

@@ -149,7 +149,7 @@
     "\n",
     "We can run a grid search by using the {class}`~metalearners.grid_search.MetaLearnerGridSearch`\n",
     "class. However, it's important to note that this class only supports a single MetaLearner\n",
-    "architecture. If you're interested in conducting a grid search across multiple architectures,\n",
+    "architecture at a time. If you're interested in conducting a grid search across multiple architectures,\n",
     "it will require several grid searches.\n",
     "\n",
     "Let's say we want to work with a {class}`~metalearners.DRLearner`. We can check the names of\n",