Wrong function name in refresh token documentation

[xintellion]

Describe the bug
Documentation improvement

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://manfredsteyer.github.io/angular-oauth2-oidc/docs/additional-documentation/refreshing-a-token.html'

Expected behavior
The function name refrenced in the documentation should match the name in the code

Additional context
In the document the function name for refreshing a token seems to be wrong
this.oauthService.refresh();
I think it should be:
this.oauthService.refreshToken();

[jeroenheijmans]

Think you're right, there seems to only be a refreshToken() method on the service.

[xintellion]

@jeroenheijmans will provide a PR

[xintellion]

@jeroenheijmans created a PR

[jeroenheijmans]

Thx!

Note that it's typically the core maintainer to merge a bunch of PRs at once, every once in a while, so it might take a bit.

[jonyeezs]

pinging to notify this can be closed (if forgotten)