Update radiobutton.adoc

Removed unneeded new line breaks.

src/docs/asciidoc/jme3/contributions/tonegodgui/radiobutton.adoc

@@ -14,9 +14,9 @@ ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 *  They provide a default label (which is only added if the label text is set).
 *  They provide the abstract method onChange for executing code when the RadioButton is altered by the user.
 
-Again, the same three options for constructor are available as show in the <<jme3/contributions/tonegodgui/quickstart#,Quick Start Guide>>.+
-+
-*Constructor 1:*+
+Again, the same three options for constructor are available as show in the <<jme3/contributions/tonegodgui/quickstart#,Quick Start Guide>>.
+
+*Constructor 1:*
 
 [source,java]
 ----
@@ -31,7 +31,7 @@ RadioButton rb = new RadioButton(screen, “rb”, new Vector2f(15, 15));
 
 ----
 
-*Constructor 2:*+
+*Constructor 2:*
 
 [source,java]
 ----
@@ -45,7 +45,7 @@ RadioButton rb = new RadioButton(screen, “rb”, new Vector2f(15, 15),
 
 ----
 
-*Constructor 3:*+
+*Constructor 3:*
 
 [source,java]
 ----