install: generalise version for manual OpenJDK install

Author: practicalli-johnny

CHANGELOG.md

@@ -7,6 +7,8 @@
 - clojure-cli: install deps.edn configuration
 - clojure-cli: `clojure -X:deps tree` examples
 - clojure-cli: `clojure -X:deps pom` 
+- install: debian packages approach for OpenJDK rather than a specific Ubuntu tab
+- install: recommended OpenJDK versions of 17 and 21 as hint
 
 ## Added
 - button link to Clojure CLI releases changelog to view available versions

docs/install/java.md

@@ -102,7 +102,7 @@ If the version is `17` or above, then [jump to the Clojure install page](clojure
     If Chocolatey does not work, then try the [manual Java install](install-java.html#manual).
 
 === "Manual"
-    [Download OpenJDK 17 Hotspot from Adoptium](https://adoptium.net/){target=_blank} - pre-build OpenJDK binaries freely available for multiple operating systems.
+    [Download OpenJDK from Adoptium](https://adoptium.net/){target=_blank} - pre-build OpenJDK binaries freely available for multiple operating systems.
 
     Run the file once downloaded and follow the install instructions.