RMX1811: fix yaml header

Change-Id: Idc057e1f98772270885bdd41d5fd74370a34ce5c
diff --git a/_realme/realmec1.markdown b/_realme/realmec1.markdown
index 91a26ed..15fd7d1 100644
--- a/_realme/realmec1.markdown
+++ b/_realme/realmec1.markdown
@@ -1,4 +1,4 @@
-------
+---
 layout: device
 title:  "Realme C1"
 codename: RMX1811
@@ -20,4 +20,4 @@
 
 {% include twrpinstall.html %}
 
-{% include fastbootinstall.html %}
\ No newline at end of file
+{% include fastbootinstall.html %}