Fix 2.6.2 reference docs

Closes gh-2035

spring-session-docs/antora-playbook.yml

@@ -22,5 +22,6 @@ ui:
 
 pipeline:
   extensions:
+    - require: ./antora/extensions/version-fix.js
     - require: ./antora/extensions/major-minor-segment.js
     - require: ./antora/extensions/root-component-name.js

spring-session-docs/antora/extensions/version-fix.js

@@ -0,0 +1,15 @@
+'use strict'
+
+module.exports.register = (pipeline, { config }) => {
+
+    pipeline.on('contentAggregated', ({ contentAggregate }) => {
+        contentAggregate.forEach(aggregate => {
+            if (aggregate.version === "2.6.2" &&
+                aggregate.prerelease == "-SNAPSHOT") {
+                aggregate.version = "2.6.2"
+                aggregate.displayVersion = `${aggregate.version}`
+                delete aggregate.prerelease
+            }
+        })
+    })
+}