Update version checks: (#10954)

* Update version checks:

- Add error code for old python version
- Fix min python version in docs
- Various spelling fixes in docs

* Fix docs link

* Revert change to docs version string

* Bug fix

docs/docs/settings/MFA.md

@@ -16,4 +16,4 @@ To make MFA mandatory for all users:
 
 ### Security Consideration
 
-A user can lock themself out if they lose access to both the device with their TOTP app and their backup tokens. An admin can delete their tokens from the admin pages (they exist under the 'TOTP devices' / 'static devices' models) . This should be a last resort and only done by people knowledgeable about the [admin pages](../settings/admin.md) as changes there might circumvent InvneTrees business and security logic.
+A user can lock themselves out if they lose access to both the device with their TOTP app and their backup tokens. An admin can delete their tokens from the admin pages (they exist under the 'TOTP devices' / 'static devices' models) . This should be a last resort and only done by people knowledgeable about the [admin pages](../settings/admin.md) as changes there might circumvent InvenTree's business and security logic.

docs/docs/settings/email.md

@@ -9,7 +9,7 @@ InvenTree can be configured to send emails to users, for various purposes.
 To enable this, email configuration settings must be supplied to the InvenTree [configuration options](../start/config.md#email-settings).
 
 !!! info "Functionality might be degraded"
-    Multiple functions of InvenTree require functioning email delivery, including *Password Reset*, *Notififications*, *Update Infos*
+    Multiple functions of InvenTree require functioning email delivery, including *Password Reset*, *Notifications*, *Update Infos*
 
 ### Outgoing
 

docs/docs/settings/error_codes.md

@@ -95,6 +95,12 @@ An error occurred while reading the InvenTree configuration file. This might be
 
 Django is not installed in the current Python environment. This means that the InvenTree backend is not running within the correct [python virtual environment](../start/index.md#virtual-environment) or that the required Python packages were not installed correctly.
 
+#### INVE-E15
+
+**Python version not supported**
+
+This error occurs attempting to run InvenTree on a version of Python which is older than the minimum required version. We [require Python {{ config.extra.min_python_version }} or newer](../start/index.md#python-requirements)
+
 ### INVE-W (InvenTree Warning)
 Warnings - These are non-critical errors which should be addressed when possible.