add EPS20 lab 1

index.yml

@@ -61,6 +61,10 @@
           url: difrenciaal-vergeleiking.html
         - lable: 2de Orde DV
           url: 2de-orde-dv.html
+    - lable: WIS20-2
+      sidebar:
+        - lable: index
+          url: .
 
     - lable: REG10
       url: REG10-2
@@ -113,6 +117,8 @@
           url: .
         - lable: week 1
           url: week-1.html
+        - lable: lab 1
+          url: lab-1.html
 - lable: Toki Pona
   url: tokipona