Fix tabs in jenkinsfile

Jenkinsfile

@@ -7,9 +7,9 @@ spec:
     imagePullPolicy: Always
     command:
     - /busybox/cat
-	volumeMounts:
-	- name: certs
-	  mountPath: /kaniko/ssl/certs
+    volumeMounts:
+    - name: certs
+      mountPath: /kaniko/ssl/certs
     tty: true
   volumes:
     - name: certs
@@ -21,7 +21,7 @@ spec:
     node(POD_LABEL) {
         stage('Git') {
             git url: 'https://gyulai.cloud/git/bme/covidok-backend.git',
-			    credentialsId: '1b1c30a0-590d-41d4-b775-bdb90e837bc8'
+                credentialsId: '1b1c30a0-590d-41d4-b775-bdb90e837bc8'
             container('kaniko') {
                 stage('Build and publish dev Docker image') {
                     sh '/kaniko/executor --dockerfile=/home/jenkins/agent/workspace/gitea-bme_covidok-backend_master/CoviDok/Dockerfile.CI -c /home/jenkins/agent/workspace --destination=docker.local/bme/covidok'