Fix page title typo.

Closes #15390.

PiperOrigin-RevId: 446417155
diff --git a/site/en/_book.yaml b/site/en/_book.yaml
index 1f4ff40..9019de3 100644
--- a/site/en/_book.yaml
+++ b/site/en/_book.yaml
@@ -233,12 +233,12 @@
         path: /docs/remote-execution-sandbox
       - title: Non-hermetic WORKSPACE rules
         path: /docs/workspace-log
-      - title: Remote—Debug remote chaching
+      - title: Remote—Debug remote caching
         path: /docs/remote-execution-caching-debug
       - heading: Remote caching
       - title: Overview
         path: /docs/remote-caching
-      - title: Local—Debug remote chaching
+      - title: Local—Debug remote caching
         path: /docs/remote-caching-debug
       - heading: Persistent workers
       - title: Overview