diff --git a/docs/entity/entity.md b/docs/entity/entity.md
index 595849b..b93af84 100644
--- a/docs/entity/entity.md
+++ b/docs/entity/entity.md
@@ -2,11 +2,11 @@
 # Entity
 
 ### Contents
-[About](#About)
+[About](#about)
 
-[Usage](#Usage)
+[Usage](#usage)
 
-[Notes](#Notes)
+[Notes](#notes)
 
 ## About
 An 'entity' is a unique ID.