Fixed released_state docs switch to build correctly and include missing links

docs/reference/index.asciidoc

@@ -3,7 +3,11 @@
 
 :version:        6.0.0-alpha1
 :major-version:  6.x
-// release-state can be: released | prerelease | unreleased
+
+//////////
+release-state can be: released | prerelease | unreleased
+//////////
+
 :release-state:  unreleased
 :lucene_version: 6.2.0
 :branch:         master

docs/reference/setup/install/deb.asciidoc

@@ -90,10 +90,20 @@ Duplicate sources.list entry https://artifacts.elastic.co/packages/{major-versio
 Examine +/etc/apt/sources.list.d/elasticsearch-{major-version}.list+ for the duplicate entry or locate the duplicate entry amongst the files in `/etc/apt/sources.list.d/` and the `/etc/apt/sources.list` file.
 ==================================================
 
+endif::[]
+
 
 [[install-deb]]
 ==== Download and install the Debian package manually
 
+ifeval::["{release-state}"=="unreleased"]
+
+Version {version} of Elasticsearch has not yet been released.
+
+endif::[]
+
+ifeval::["{release-state}"!="unreleased"]
+
 The Debian package for Elastisearch v{version} can be downloaded from the website and installed as follows:
 
 ["source","sh",subs="attributes"]
@@ -106,7 +116,6 @@ sudo dpkg -i elasticsearch-{version}.deb
     https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-{version}.deb.sha1[published SHA].
 
 endif::[]
-// release-state!=unreleased
 
 include::init-systemd.asciidoc[]
 

docs/reference/setup/install/rpm.asciidoc

@@ -82,9 +82,19 @@ sudo zypper install elasticsearch <3>
 <2> Use `dnf` on Fedora and other newer Red Hat distributions.
 <3> Use `zypper` on OpenSUSE based distributions
 
+endif::[]
+
 [[install-rpm]]
 ==== Download and install the RPM manually
 
+ifeval::["{release-state}"=="unreleased"]
+
+Version {version} of Elasticsearch has not yet been released.
+
+endif::[]
+
+ifeval::["{release-state}"!="unreleased"]
+
 The RPM for Elastisearch v{version} can be downloaded from the website and installed as follows:
 
 ["source","sh",subs="attributes"]
@@ -97,7 +107,6 @@ sudo rpm --install elasticsearch-{version}.rpm
     https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-{version}.rpm.sha1[published SHA].
 
 endif::[]
-// release-state!=unreleased
 
 include::init-systemd.asciidoc[]
 

docs/reference/setup/install/windows.asciidoc

@@ -32,7 +32,7 @@ window, `CD` to the `%ES_HOME%` directory, for instance:
 CD c:\elasticsearch-{version}
 ----------------------------
 
-endif:[]
+endif::[]
 
 [[windows-running]]
 ==== Running Elasticsearch from the command line