fix bad links

Author: SethTisue

blog/_posts/2017-05-31-first-dotty-milestone-release.md

@@ -69,7 +69,7 @@ This technology preview demonstrates new language features planned for Scala 3:
   - [Trait Parameters](https://dotty.epfl.ch/docs/reference/other-new-features/trait-parameters.html)
   - [Enumerations](https://dotty.epfl.ch/docs/reference/enums/enums.html)
   - [Algebraic Data Types](https://dotty.epfl.ch/docs/reference/enums/adts.html)
-  - [By-Name Implicits](https://dotty.epfl.ch/docs/reference/other-new-features/implicit-by-name-parameters.html)
+  - [By-Name Implicits](https://dotty.epfl.ch/docs/reference/contextual/by-name-context-parameters.html)
 
 We also ship with tools that help you try out the Dotty platform:
 

blog/_posts/2017-07-12-second-dotty-milestone-release.md

@@ -31,7 +31,7 @@ The [previous technology preview](/blog/2017/05/31/first-dotty-milestone-release
 [Trait Parameters](https://dotty.epfl.ch/docs/reference/other-new-features/trait-parameters.html),
 [Enumerations](https://dotty.epfl.ch/docs/reference/enums/enums.html),
 [Algebraic Data Types](https://dotty.epfl.ch/docs/reference/enums/adts.html),
-[By-Name Implicits](https://dotty.epfl.ch/docs/reference/other-new-features/implicit-by-name-parameters.html).
+[By-Name Implicits](https://dotty.epfl.ch/docs/reference/contextual/by-name-context-parameters.html).
 
 This technology preview is geared towards improving stability and reliability. It includes:
 

blog/_posts/2018-04-30-in-a-nutshell.md

@@ -176,7 +176,7 @@ The Scala 3 language will also directly incorporate some constructs
 that so far required advanced macro code to define. In particular:
 
 - We model lazy implicits directly using
-[by-name parameters](https://dotty.epfl.ch/docs/reference/other-new-features/implicit-by-name-parameters.html) instead of through a macro.
+[by-name parameters](https://dotty.epfl.ch/docs/reference/contextual/by-name-context-parameters.html) instead of through a macro.
 
  - Native [type lambdas](https://dotty.epfl.ch/docs/reference/new-types/type-lambdas.html) reduce the need for [kind projector](https://github.com/non/kind-projector).