Fixed issue of failing duplicate line ending removal

and therefore failing jhipster jdl command

Author: OmarHawk

generators/spring-boot-javers/generator.js

@@ -39,7 +39,7 @@ export default class extends BaseApplicationGenerator {
                 const needleIndex = content.indexOf('    // jhipster-needle-add-audited-entities');
                 let beforeContent = content.substring(0, needleIndex);
                 // Drop extra line ending if it exists, can be caused by prettier formatting
-                beforeContent = beforeContent.endsWith('/n/n') ? beforeContent.slice(0, -1) : beforeContent;
+                beforeContent = beforeContent.endsWith('\n\n') ? beforeContent.slice(0, -1) : beforeContent;
                 const afterContent = content.substring(needleIndex);
 
                 if (!beforeContent.includes(needleValuePrefix) || !beforeContent.endsWith(needleValueSuffix)) {