docs: fixing typos

subjects/java/checkpoints/universal-greeting/README.md

@@ -4,9 +4,9 @@
 
 In a file named `UniversalGreeting.java` write a function `greeting` that takes a String language as a parameter and returns a greeting message based on the language as follows:
 
-`FR` : `Bonjour comment allez-vous?`
+`FR`: `Bonjour comment allez-vous?`
 `EN`: `Hello, How are you?`
-`ES` : `Hola, cómo estás?`
+`ES`: `Hola, cómo estás?`
 
 and return an empty string in any other case.
 
@@ -37,6 +37,6 @@ and its output :
 ```shell
 $ javac *.java -d build
 $ java -cp build ExerciseRunner
-Hello, How are you
+Hello, How are you?
 $
 ```