Fix typo in `DefaultSessionCacheIntercepter` naming

[fredpi]

There's a typo in the name of the DefaultSessionCacheIntercept*e*r class (should be DefaultSessionCacheIntercept*o*r). The corresponding file is already named correctly.

I suggest to fix this by

• changing to the proper spelling
• creating a typealias with the old name
• adding a deprecation notice to the typealias
• removing the typealias on the 1.0 release