Improved markdown rendering of lists, added links to NodeSchool works…

…hoppers

certification.md

@@ -129,20 +129,21 @@ Recertification requirements and interval:
 
 1. Regulatory requirements:  there are no regulatory requirements for Node.js.
 2. The exam will reflect changes to normative documents annually with LTS cycle.
-3. The exam will reviewed and updated every 2 years    4. The LTS release
+3. The exam will reviewed and updated every 2 years
+4. The LTS release
 support cycle reflects the nature and maturity of the industry or field in which
-the certified person is working.    5. The risks resulting from an incompetent
+the certified person is working.
+5. The risks resulting from an incompetent
 person include the following:  bad hire; lost recruitment money; incremental
-training costs; missed deadlines.   6. Ongoing changes in technology, and
-requirements for certified persons are reflected in ES releases    7.
-Requirements of interested parties were taken into account in formulating the
+training costs; missed deadlines.
+6. Ongoing changes in technology, and
+requirements for certified persons are reflected in ES releases
+7. Requirements of interested parties were taken into account in formulating the
 task force, and will be included in guiding bodies for updating and revision of
 the exam.  Interested parties include:
-
-- Programmers  Training companies  Foundation  Consultancy companies
-- Organizations using Node  Hiring managers
-
-1. No surveillance activities are planned to evaluate certificants on an ongoing
+	- Programmers  Training companies  Foundation  Consultancy companies
+	- Organizations using Node  Hiring managers
+8. No surveillance activities are planned to evaluate certificants on an ongoing
 basis.
 
 ### Test Retake Interval
@@ -186,6 +187,6 @@ A subset of these will be provided as part of the isolated exam environment.
 #### Training Materials
 
 - [NodeSchool.io](https://nodeschool.io/)
-  - learnyounode
-  - scope-chains-closures
-  - stream-adventure
+  - [learnyounode](https://github.com/workshopper/learnyounode)
+  - [scope-chains-closures](https://github.com/workshopper/scope-chains-closures)
+  - [stream-adventure](https://github.com/workshopper/stream-adventure)