Fixed easycsv_find_num_value documentation

Signed-off-by: Pradana AUMARS <paumars@courrier.dev>

include/easycsv.h

@@ -129,11 +129,11 @@ easycsv_find_value(const easycsv*,
  * Find number of instances of value
  * @param[in] constant pointer to easycsv structure 
  * @param[in] value to find
- * @return number of instances
+ * @return positive integer if success, -1 if error
  */
 int
 easycsv_find_num_value(const easycsv*,
-		     const char*);
+	 	       const char*);
 
 /*** Access, read ***/