Fix package name of Android color blob detection sample

(cherry picked from commit fc93518449)

Signed-off-by: Andrey Kamaev <andrey.kamaev@itseez.com>

samples/android/color-blob-detection/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          package="org.opencv.example.colorblobdetect"
+          package="org.opencv.samples.colorblobdetect"
           android:versionCode="21"
-          android:versionName="2.1" >
+          android:versionName="2.1">
 
     <application android:label="@string/app_name" android:icon="@drawable/icon">
         <activity android:name="ColorBlobDetectionActivity"