0.16.2 release: fix nits in blog and release posts

Suggestions by John Newbery (thanks!)

Author: harding

_posts/en/posts/2018-07-29-release-0.16.2.md

@@ -28,7 +28,7 @@ features, such as:
   defeat this attack even if the requested block has been pruned.  None
   of this mitigates the attack for actual SPV clients.
 
-- The [`abandontransaction`][rpc abandontransaction] RPC has been fixed
+- The [abandontransaction RPC][rpc abandontransaction] has been fixed
   to abandon all descendant transactions, not just children.  As before,
   you can call this RPC when you no longer want your wallet to
   re-broadcast an old unconfirmed transaction. Note that the RPC can not

_releases/0.16.2.md

@@ -90,7 +90,7 @@ frequently tested on them.
 
 ### GUI
 - #12432 `f78e7f6` [qt] send: Clear All also resets coin control options (Sjors)
-- #12617 `21dd512` gui: Show messages as text not html (laanwj)
+- #12617 `21dd5127` gui: Show messages as text not html (laanwj)
 - #12793 `cf6feb7` qt: Avoid reseting on resetguisettigs=0 (MarcoFalke)
 
 ### Build system