refactor(stepper): fix lint issues

Author: arodr967

src/cdk/stepper/stepper.ts

@@ -386,7 +386,8 @@ export class CdkStepper implements AfterViewInit, OnDestroy {
   private _getGuidelineLogic(
     step: CdkStep,
     isCurrentStep: boolean,
-    state: StepState = STEP_STATE.NUMBER): StepState {
+    state: StepState = STEP_STATE.NUMBER
+  ): StepState {
     if (step._showError && step.hasError && !isCurrentStep) {
       return STEP_STATE.ERROR;
     } else if (step.completed && !isCurrentStep) {

src/lib/stepper/stepper.ts

@@ -7,7 +7,13 @@
  */
 
 import {Directionality} from '@angular/cdk/bidi';
-import {CdkStep, CdkStepper, StepContentPositionState, MAT_STEPPER_GLOBAL_OPTIONS, StepperOptions} from '@angular/cdk/stepper';
+import {
+  CdkStep,
+  CdkStepper,
+  StepContentPositionState,
+  MAT_STEPPER_GLOBAL_OPTIONS,
+  StepperOptions
+} from '@angular/cdk/stepper';
 import {AnimationEvent} from '@angular/animations';
 import {
   AfterContentInit,