Added steps to all the parallel stages

Jenkinsfile

@@ -20,19 +20,25 @@ pipeline {
                     }
                 }
                 stage('Check Formatting') {
+                    steps {
                         echo 'Starting format check...'
                         sh 'cargo fmt --check'
                     }
+                }
                 stage('Clippy') {
+                    steps {
                         echo 'Starting linter...'
                         sh 'cargo clippy -- -D warnings'
                     }
+                }
                 stage('Code coverage') {
+                    steps {
                         echo 'Starting code coverage step...'
                         sh 'cargo tarpaulin --verbose --workspace'
                     }
                 }
             }
+        }
 
     // Build and deploy will occur here probably
     }