Improved doxy documentation

FossilOrigin-Name: 180207c76a560f2b409dbc95bc5b1b57e2f7616a277cb987edfc8747328a4f80

src/cw/log.h

@@ -22,6 +22,11 @@
  *@brief Definitions for logging and debugging.
  */
 
+/**
+ * @defgroup LOGDBG Logging & Debugging
+ * @{
+ */
+
 #ifndef __CW_LOG_H
 #define __CW_LOG_H
 
@@ -52,4 +57,8 @@ extern const char *cw_log_name;
 extern struct cw_LogWriter * cw_log_writers[];
 
 
+/**
+ * @} LOGDBG
+ */
+
 #endif