[doc] fix diff and helm commands description

Author: rmannibucau

bundlebee-core/src/main/java/io/yupiik/bundlebee/core/command/impl/DiffCommand.java

@@ -228,8 +228,8 @@ public String name() {
 
     @Override
     public String description() {
-        return "Diff an alveolus against a running cluster." +
-                "// end of short description\n\n" +
+        return "Diff an alveolus against a running cluster.\n" +
+                "// end of short description\n" +
                 "The logic behind is to visit the configured alveolus and for each of its descriptor, query the cluster state and do a JSON-Diff between both.\n" +
                 "To avoid false positives, you will likely want to tune the ignored pointers which enable to drop dynamic data (managed by Kubernetes server).\n\n" +
                 "The diff output has two types of diff:\n\n" +

bundlebee-core/src/main/java/io/yupiik/bundlebee/core/command/impl/HelmCommand.java

@@ -147,7 +147,7 @@ public boolean hidden() {
 
     @Override
     public String description() {
-        return "Converts an alveolus deployment to a simple helm chart.\"" +
+        return "Converts an alveolus deployment to a simple helm chart.\n" +
                 "// end of short description\n" +
                 "Note you will loose some features doing that but in case some rigid rules force to use helm it enables to " +
                 "still rely on bundlebee setup and share a helm chart to ops.\n" +