typo fix (#868)

diff --git a/README.md b/README.md
index 3bacbbc..f08d04a 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@
     cd vcpkg
     ./vcpkg integrate install
-    vcpkg install brotli
+    ./vcpkg install brotli
 The brotli port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.