Fixing Build issues with tests (#2628)

Author: eldhosembabu

firebase-inappmessaging/src/main/java/com/google/firebase/inappmessaging/internal/ForegroundNotifier.java

@@ -63,7 +63,7 @@ public class ForegroundNotifier implements Application.ActivityLifecycleCallback
   private Runnable check;
   private final BehaviorSubject<String> foregroundSubject = BehaviorSubject.create();
 
-  /** @returns a {@link ConnectableFlowable} representing a stream of foreground events */
+  /** @return a {@link ConnectableFlowable} representing a stream of foreground events */
   public ConnectableFlowable<String> foregroundFlowable() {
     return foregroundSubject.toFlowable(BackpressureStrategy.BUFFER).publish();
   }

firebase-inappmessaging/src/main/java/com/google/firebase/inappmessaging/model/InAppMessage.java

@@ -141,21 +141,21 @@ public String getBackgroundHexColor() {
     return backgroundHexColor;
   }
 
-  /** @deprecated Use {@link #getCampaignMetadata()#getCampaignId()} instead. */
+  /** @deprecated Use {@link #getCampaignMetadata()} instead. */
   @Nullable
   @Deprecated
   public String getCampaignId() {
     return campaignMetadata.getCampaignId();
   }
 
-  /** @deprecated Use {@link #getCampaignMetadata()#getCampaignName()} instead. */
+  /** @deprecated Use {@link #getCampaignMetadata()} instead. */
   @Nullable
   @Deprecated
   public String getCampaignName() {
     return campaignMetadata.getCampaignName();
   }
 
-  /** @deprecated Use {@link #getCampaignMetadata()#getIsTestMessage()} instead. */
+  /** @deprecated Use {@link #getCampaignMetadata()} instead. */
   @Nullable
   @Deprecated
   public Boolean getIsTestMessage() {