Revert "Update Tinkey build documentation (#320)"

This reverts commit 0fbff9d0b881cfae9b9914aa810f41959e6b16e3.
diff --git a/docs/TINKEY.md b/docs/TINKEY.md
index 7408a01..44a0fe6 100644
--- a/docs/TINKEY.md
+++ b/docs/TINKEY.md
@@ -18,11 +18,11 @@
 -   Build
 
 ```shell
-cd tink/tools
-bazel build tinkey
+cd tink
+bazel build tools/tinkey/...
 ```
 
-The binary is located at `bazel-bin/tinkey/tinkey`.
+The binary is located at `bazel-bin/tools/tinkey/tinkey`.
 
 ## Usage