Correct markdown typo

Author: developernotes

README.md

@@ -130,7 +130,7 @@ An article covering both integration of SQLCipher into an Android application as
 
 For applications which utilize ProGuard, a few additional rules must be included when using SQLCipher for Android. These rules instruct ProGuard to omit the renaming of the internal SQLCipher classes which are used via lookup from the JNI layer. It is worth noting that since SQLCipher or Android is based on open source code there is little value in obfuscating the library anyway. The more important use of ProGuard is to protect your application code and business logic.
 
-``
+```
 -keep,includedescriptorclasses class net.sqlcipher.** { *; }
 -keep,includedescriptorclasses interface net.sqlcipher.** { *; }
 ```