Fix typos

Author: cclauss

CHANGES

@@ -6,7 +6,7 @@ v1.2.2 (2021-05-27)
 
 - Fix #245: Don't update user_main_attribute @jaap3 (#283)
 - Fix #278: Allow ACS_DEFAULT_REDIRECT_URL to override LOGIN_REDIRECT_URL in more places @jaap3 (#285)
-- Add release notes for previous and upcomming releases @jaap3 (#284)
+- Add release notes for previous and upcoming releases @jaap3 (#284)
 - Add default_auto_field setting, strongly recommended in Django 3.2 @jaap3 (#282)
 - SPConfig loader instead of global django settings @peppelinux (#281)
 - Fix #277: Resolve LOGIN_REDIRECT_URL @jaap3 (#279)
@@ -122,7 +122,7 @@ v1.0.0 (2020-10-15)
   - Method signature changed on Saml2Backend.clean_attributes: from `clean_attributes(self, attributes: dict)` to `clean_attributes(self, attributes: dict, idp_entityid: str, **kwargs)`
   - Methodignature changed on Saml2Backend.is_authorized: from `is_authorized(self, attributes: dict, attribute_mapping: dict)` to `is_authorized(self, attributes: dict, attribute_mapping: dict, idp_entityid: str, **kwargs)`
 - SAML session refactor and minor changes in README file
-- local Logout - indipendent by IdP SLO Response
+- local Logout - independent by IdP SLO Response
 
 0.30.0 (2020-07-30)
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