Update CONTRIBUTING.md

small update for coding style

CONTRIBUTING.md

@@ -23,6 +23,11 @@ if (a == b) {
 }
 ```
 
+```cpp
+if (a == b) doStuff(a);
+```
+
+less readable, but acceptable in some cases:
 ```cpp
 if (a == b)
 {
@@ -30,9 +35,6 @@ if (a == b)
 }
 ```
 
-```cpp
-if (a == b) doStuff(a);
-```
 
 There should always be a space between a keyword and its condition and between the condition and brace.  
 Within the condition, no space should be between the paranthesis and variables.