Typo correction from credentialls to credentials

Related issues:
- ArcGIS/geosaurus#3315
- ArcGIS/geosaurus#1275

Author: markjdugger

guide/03-the-gis/working-with-different-authentication-schemes.ipynb

@@ -502,7 +502,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Storing your credentialls locally\n",
+    "## Storing your credentials locally\n",
     "If you are signing in frequently to a particular GIS and would like to store the credentials locally on your computer, then you could do so using the `profile` parameter of your `GIS`.\n",
     "\n",
     "Persistent profiles for the GIS can be created by giving the GIS authorization credentials and specifying a profile name. The profile stores all of the authorization credentials (except the password) in the user’s home directory in an unencrypted config file named `.arcgisprofile.` The profile securely stores the password in an O.S. specific password manager through the [keyring](https://pypi.python.org/pypi/keyring) python module. (Note: Linux systems may need additional software installed and configured for proper security) Once a profile has been saved, passing the profile parameter by itself uses the authorization credentials saved in the configuration file/password manager by that profile name. Multiple profiles can be created and used in parallel.\n"