DevTools: Fix "documentation" module code style

LayoutTests/inspector/documentation/document-parser-expected.txt

Index: LayoutTests/inspector/documentation/document-parser-expected.txt
diff --git a/LayoutTests/inspector/documentation/document-parser-expected.txt b/LayoutTests/inspector/documentation/document-parser-expected.txt
index 8ada58813de078883dd9d4140441a5c9db6f999d..b99c0406bf2e63c3a9e5d1d446935082a89fd81c 100644
--- a/LayoutTests/inspector/documentation/document-parser-expected.txt
+++ b/LayoutTests/inspector/documentation/document-parser-expected.txt
@@ -54,7 +54,7 @@ If no arguments are provided, the return value is equal to [[javascript/Number/c
     summary : "Returns the larger of a set of supplied numeric expressions."
 }
 {
-    CSSproperties : {
+    cssProperties : {
         Animatable : "Yes"
         Applies to : "All elements"
         CSS object model property : "color"