erp5_corporate_identity: change code style

easy to read

bt5/erp5_corporate_identity/SkinTemplateItem/portal_skins/erp5_corporate_identity/template_css/zenburn.css.css

@@ -18,7 +18,7 @@ based on dark.css by Ivan Sagalaev
 .hljs-keyword,
 .hljs-selector-tag,
 .hljs-tag {
-  color: #e3ceab;
+  color: #690;
 }
 
 .hljs-template-tag {
@@ -49,7 +49,7 @@ based on dark.css by Ivan Sagalaev
 .hljs-selector-class,
 .hljs-section,
 .hljs-type {
-  color: #efef8f;
+  color: black;
 }
 
 .hljs-symbol,
@@ -62,14 +62,14 @@ based on dark.css by Ivan Sagalaev
 .hljs-string,
 .hljs-built_in,
 .hljs-builtin-name {
-  color: #cc9393;
+  color: #905d5e;
 }
 
 .hljs-addition,
 .hljs-comment,
 .hljs-quote,
 .hljs-meta {
-  color: #7f9f7f;
+  color: black;
 }