internal g3doc documentation change.

PiperOrigin-RevId: 539134110
Change-Id: I28041f77e18bc67aa0ffabdc7205e350deed22c8
diff --git a/docs/primer.md b/docs/primer.md
index 31d6316..c3aee3c 100644
--- a/docs/primer.md
+++ b/docs/primer.md
@@ -42,7 +42,7 @@
 at home if you've used JUnit or PyUnit before. If not, it will take you about 10
 minutes to learn the basics and get started. So let's go!
 
-## Beware of the nomenclature
+## Beware of the Nomenclature
 
 {: .callout .note}
 *Note:* There might be some confusion arising from different definitions of the