docs: documentation updates for v2.10.2 (#13500)

www/apps/book/sidebar.mjs

@@ -448,6 +448,11 @@ export const sidebars = [
                 path: "/learn/fundamentals/workflows/multiple-step-usage",
                 title: "Multiple Step Usage",
               },
+              {
+                type: "link",
+                path: "/learn/fundamentals/workflows/locks",
+                title: "Using Locks",
+              },
               {
                 type: "ref",
                 path: "/learn/debugging-and-testing/debug-workflows",