[DOCS]: minor update

Davide Faconti · Davide Faconti · commit 1e91d1acb904 · 2018-10-17T14:46:46.000+02:00
diff --git a/docs/DecoratorNode.md b/docs/DecoratorNode.md
@@ -26,7 +26,7 @@ Otherwise, it returns always FAILURE.
 
 ## RepeatNode
 
-Tick the child up to N times, where N is passed as a [NodeParameter](NodeParameters.md),
+Tick the child up to N times, where N is passed as a [NodeParameter](tutorial_B_node_parameters.md),
 as long as the child returns SUCCESS.
 
 Interrupt the loop if the child returns FAILURE and, in that case, return FAILURE too.
@@ -35,7 +35,7 @@ If the child returns RUNNING, this node returns RUNNING too.
 
 ## RetryNode
 
-Tick the child up to N times, where N is passed as a [NodeParameter](NodeParameters.md),
+Tick the child up to N times, where N is passed as a [NodeParameter](tutorial_B_node_parameters.md),
 as long as the child returns FAILURE.
 
 Interrupt the loop if the child returns SUCCESS and, in that case, return SUCCESS too.
diff --git a/docs/index.md b/docs/index.md
@@ -31,7 +31,7 @@ use the concept of
 [Component Base Software Engineering](https://en.wikipedia.org/wiki/Component-based_software_engineering).
 
 Any existing middleware for robotics took this approach either informally or formally,
-being [ROS](www.ros.org), [YARP](www.yarp.it) and 
+being [ROS](http://www.ros.org), [YARP](http://www.yarp.it) and 
 [SmartSoft](http://www.servicerobotik-ulm.de) some notable examples.
 
 A "good" software architecture should have the following characteristics:
diff --git a/docs/tutorial_A_create_trees.md b/docs/tutorial_A_create_trees.md
@@ -10,7 +10,7 @@ the former for the sake of completeness.
 
 ## How to create your own ActionNodes
 
-You can find the source code here: [dummy_nodes.h](../sample_nodes/dummy_nodes.h)
+You can find the source code here: **sample_nodes/dummy_nodes.h**.
 
 The default (and recommended) way to create a TreeNode is by inheritance.
 
