Update the xarray-docs link in 03-dask-xarray.ipynb

Author: erogluorhan

notebooks/03-dask-xarray.ipynb

@@ -952,7 +952,7 @@
     "*  [Dask Code](https://github.com/dask/dask/)\n",
     "*  [Dask Blog](https://blog.dask.org/)\n",
     "*  [Xarray Docs](https://xarray.pydata.org/)\n",
-    "*  [Xarray + Dask docs](https://docs.xarray.dev/en/stable/user-guide/dask.html), particularly the [optimization tips](https://docs.xarray.dev/en/stable/user-guide/dask.html#optimization-tips)\n",
+    "*  [Xarray + Dask docs](https://docs.xarray.dev/en/stable/user-guide/dask.html), particularly the [best practices](https://docs.xarray.dev/en/stable/user-guide/dask.html#best-practices)\n",
     "* [Xarray Tutorial material](https://tutorial.xarray.dev/intro.html)\n",
     "  \n",
     "\n",