I tend to use shorter name for Let's Encrypt

diff --git a/anchors/ca/lets-encrypt/x1.pem b/anchors/ca/le/x1.pem
similarity index 100%
rename from anchors/ca/lets-encrypt/x1.pem
rename to anchors/ca/le/x1.pem

diff --git a/anchors/ca/lets-encrypt/x2.pem b/anchors/ca/le/x2.pem
similarity index 100%
rename from anchors/ca/lets-encrypt/x2.pem
rename to anchors/ca/le/x2.pem