Move to . seperators to not confuse the rest of the scripts

packages/java/20.valhalla.20.75/metadata.json

@@ -1,5 +1,5 @@
 {
     "language": "java",
-    "version": "20-valhalla+20-75",
+    "version": "20.valhalla.20.75",
     "aliases": []
 }

packages/java/21-ea+22/test.java

@@ -1,3 +0,0 @@
-void main() {
-    System.out.println("OK");
-}

packages/java/21.ea.22/metadata.json

@@ -1,5 +1,5 @@
 {
     "language": "java",
-    "version": "21-ea+22",
+    "version": "21.ea.22",
     "aliases": []
-}
+}

packages/java/21.ea.22/test.java

@@ -0,0 +1,5 @@
+class Main {
+    public static void main(String[] args) {
+    	System.out.println("OK");
+    }
+}