Fix a bunch of links

Author: julienrf

docs/_docs/contributing/architecture/phases.md

@@ -105,4 +105,4 @@ These map the transformed trees to Java classfiles or SJSIR files.
 [patternMatcher]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/transform/PatternMatcher.scala
 [erasure]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/transform/Erasure.scala
 [Mirror]: https://github.com/lampepfl/dotty/blob/master/library/src/scala/deriving/Mirror.scala
-[PCP]: {{ site.scala3ref }}/metaprogramming/macros.html#the-phase-consistency-principle
+[PCP]: ../../reference/metaprogramming/macros.md#the-phase-consistency-principle

docs/_docs/contributing/getting-started.md

@@ -134,7 +134,7 @@ The main development discussion channels are:
 [java8]: https://www.oracle.com/java/technologies/javase-jdk8-downloads.html
 [java11]: https://www.oracle.com/java/technologies/javase-jdk11-downloads.html
 [adopt]: https://adoptopenjdk.net/
-[compat]: /overviews/jdk-compatibility/overview.html
+[compat]: https://docs.scala-lang.org/overviews/jdk-compatibility/overview.html
 [scala-cla]: https://www.lightbend.com/contribute/cla/scala
 [dotty-issue]: https://github.com/lampepfl/dotty/issues
 [dotty-discussion]: https://github.com/lampepfl/dotty/discussions

docs/_docs/contributing/index.md

@@ -19,9 +19,9 @@ if you notice anything out of date, or report any issues
 ### Get the Most from This Guide
 
 `dotc` is built with Scala 3, fully utilising its [new
-features](/scala3/new-in-scala3.html). It is recommended that you first have
+features](https://docs.scala-lang.org/scala3/new-in-scala3.html). It is recommended that you first have
 some familiarity with Scala 3 to get the most out of this guide. You can learn
-more in the [language reference]({{ site.scala3ref }}).
+more in the [language reference](../reference/overview.md).
 
 Many code snippets in this guide make use of shell commands (a line beginning
 with `$`), and in this case a `bash` compatible shell is assumed. You may have

docs/_docs/reference/metaprogramming/macros-spec.md

@@ -134,7 +134,7 @@ Quotes define all the `Expr[T]` methods as extension methods.
 `Type[T]` does not have methods and therefore does not appear here.
 These methods are available as long as `Quotes` is implicitly given in the current scope.
 
-The `Quotes` instance is also the entry point to the [reflection API](./refelction.md) through the `reflect` object.
+The `Quotes` instance is also the entry point to the [reflection API](./reflection.md) through the `reflect` object.
 
 Finally, `Quotes` provides the internal logic used in quote un-pickling (`QuoteUnpickler`) in quote pattern matching (`QuoteMatching`).
 These interfaces are added to the self-type of the trait to make sure they are implemented on this object but not visible to users of `Quotes`.