fixing example in lem-in

subjects/lem-in/lem-in.en.md

@@ -127,6 +127,11 @@ student$ ./lem-in test0.txt
 ##start
 1 23 3
 2 16 7
+3 16 3
+4 16 5
+5 9 3
+6 1 5
+7 4 8
 ##end
 0 9 5
 0-4
@@ -135,12 +140,17 @@ student$ ./lem-in test0.txt
 4-3
 5-2
 3-5
+4-2
+2-1
+7-6
+7-2
+7-4
+6-5
 
-L1-2
+L1-3 L3-2
-L1-4 L2-2
+L1-4 L2-3 L3-5
-L1-0 L2-4 L3-2
+L1-0 L2-4 L3-6
-L2-0 L3-4
+L2-0 L3-0
-L3-0
 student$
 ```