Fix StatementCache docs format [ci skip]
Fix links containing stray colons
minor edit on StatementCache documentation [ci skip]
Update to Ryan's new book per his suggestion

See https://github.com/lifo/docrails/commit/edeb98c2745cbf29725eca87332cefb4f273986a#commitcomment-2995521
Fix a typo
fix :nodoc: mark on AR::AttributeMethods::Serialization [ci skip]
Corrected paramter to parameter
Merge branch 'master' of github.com:lifo/docrails