Just update to the new repo path "github.com/signalapp"

Closes #7469

src/org/thoughtcrime/securesms/components/camera/CameraView.java

@@ -370,7 +370,7 @@ public class CameraView extends ViewGroup {
     return outputOrientation;
   }
 
-  // https://github.com/WhisperSystems/Signal-Android/issues/4715
+  // https://github.com/signalapp/Signal-Android/issues/4715
   private boolean isTroublemaker() {
     return getCameraInfo().facing == CameraInfo.CAMERA_FACING_FRONT &&
            "JWR66Y".equals(Build.DISPLAY) &&

src/org/thoughtcrime/securesms/mms/LegacyMmsConnection.java

@@ -198,7 +198,7 @@ public abstract class LegacyMmsConnection {
       }
     } catch (NullPointerException npe) {
       // TODO determine root cause
-      // see: https://github.com/WhisperSystems/Signal-Android/issues/4379
+      // see: https://github.com/signalapp/Signal-Android/issues/4379
       throw new IOException(npe);
     } finally {
       if (response != null) response.close();