adding 12e-json

Author: dachafra

test-cases/dev.html

@@ -127,6 +127,7 @@
 <section id="RMLTC0012b-JSON" data-include="RMLTC0012b-JSON/README.md" data-include-format=markdown></section>
 <section id="RMLTC0012c-JSON" data-include="RMLTC0012c-JSON/README.md" data-include-format=markdown></section>
 <section id="RMLTC0012d-JSON" data-include="RMLTC0012d-JSON/README.md" data-include-format=markdown></section>
+<section id="RMLTC0012e-JSON" data-include="RMLTC0012e-JSON/README.md" data-include-format=markdown></section>
 <section id="RMLTC0013a-JSON" data-include="RMLTC0013a-JSON/README.md" data-include-format=markdown></section>
 <section id="RMLTC0015a-JSON" data-include="RMLTC0015a-JSON/README.md" data-include-format=markdown></section>
 <section id="RMLTC0015b-JSON" data-include="RMLTC0015b-JSON/README.md" data-include-format=markdown></section>