Add r0 version links

These were missed in the release process.

specification/application_service_api.rst

@@ -52,6 +52,7 @@ Other versions of this specification
 The following other versions are also available, in reverse chronological order:
 
 - `HEAD <https://matrix.org/docs/spec/application_service/unstable.html>`_: Includes all changes since the latest versioned release.
+- `r0.1.0 <https://matrix.org/docs/spec/application_service/r0.1.0.html>`_
 
 
 Application Services

specification/client_server_api.rst

@@ -45,6 +45,7 @@ Other versions of this specification
 The following other versions are also available, in reverse chronological order:
 
 - `HEAD <https://matrix.org/docs/spec/client_server/unstable.html>`_: Includes all changes since the latest versioned release.
+- `r0.4.0 <https://matrix.org/docs/spec/client_server/r0.4.0.html>`_
 - `r0.3.0 <https://matrix.org/docs/spec/client_server/r0.3.0.html>`_
 - `r0.2.0 <https://matrix.org/docs/spec/client_server/r0.2.0.html>`_
 - `r0.1.0 <https://matrix.org/docs/spec/client_server/r0.1.0.html>`_

specification/identity_service_api.rst

@@ -51,6 +51,7 @@ Other versions of this specification
 The following other versions are also available, in reverse chronological order:
 
 - `HEAD <https://matrix.org/docs/spec/identity_service/unstable.html>`_: Includes all changes since the latest versioned release.
+- `r0.1.0 <https://matrix.org/docs/spec/identity_service/r0.1.0.html>`_
 
 General principles
 ------------------