2a1f8bccee
Documentation cleanup for core::error::Request. This part of the documentation currently render like this:  The new version renders like this:  Fixes: * Add missing closing back tick. * Remove spurious double back ticks. * Add missing newline to render bullet point correctly. * Fix grammar "there are methods calledrequest_ref and request_value are available" -> "there are methods calledrequest_ref and request_value". * Change "methods" to "functions", which seems more appropriate for free functions.