Update xarray.ipynb

Couple of typos

Author: RichardScottOZ

xarray.ipynb

@@ -212,7 +212,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# git the first 10 items\n",
+    "# get the first 10 items\n",
     "da_f[:10]"
    ]
   },
@@ -247,7 +247,7 @@
    "source": [
     "### Basic Computations\n",
     "\n",
-    "When we perform mathematical maniulpations of xarray DataArrays, the coordinates come along for the ride.\n",
+    "When we perform mathematical manipulations of xarray DataArrays, the coordinates come along for the ride.\n",
     "Imagine we want to calcuate\n",
     "\n",
     "$$ g = f^2 + 1 $$\n",