hg: jdk/sandbox: http-client-tutorial: additional informational comments and fixes

[chris.hegarty at oracle.com]

Changeset: 40e766eb611b
Author:    chegar
Date:      2018-01-16 21:08 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/40e766eb611b

http-client-tutorial: additional informational comments and fixes

! src/main/java/openjdk/http/tutorial/exercise1/Retrievals.java
! src/test/java/openjdk/http/tutorial/Exercise1Test.java