rm cross-validation remark and fix typos

Author: juanitorduz

examples/generalized_linear_models/GLM-out-of-sample-predictions.ipynb

@@ -223,7 +223,7 @@
   },
   {
    "source": [
-    "As pointed out on the [thread](https://discourse.pymc.io/t/out-of-sample-predictions-with-the-glm-sub-module/773) (thank you @Nicky!), we need to keep the lables of the features ni the design matrix."
+    "As pointed out on the [thread](https://discourse.pymc.io/t/out-of-sample-predictions-with-the-glm-sub-module/773) (thank you @Nicky!), we need to keep the labels of the features in the design matrix."
    ],
    "cell_type": "markdown",
    "metadata": {}
@@ -245,13 +245,6 @@
     "print(f\"labels = {labels}\")"
    ]
   },
-  {
-   "source": [
-    "**Remark:** One needs to be careful when generating these features as we do not want to leak information in our cross validation steps. This could be the case when one-hot-encoding categorical variables."
-   ],
-   "cell_type": "markdown",
-   "metadata": {}
-  },
   {
    "source": [
     "Now we do a train-test split."