Minor tweak to the wording of the vcpkg section

Summary:
The commands as they were previously would attempt to install Folly as 32-bit, which would fail.
Also removes an extra `-` in the link's url.

Closes: https://github.com/facebook/folly/issues/713
Reviewed By: yfeldblum

Differential Revision: D6327981

fbshipit-source-id: ced8c86948b8be5c1dd88e14d6c3a77fc783aac9

diff --git a/README.md b/README.md
index 0e8c98b9608d683fd5a0729ed727449ce736fb33..4fc27ae242bfa8e1d37c94a841646a6c2b641d54 100644 (file)
--- a/README.md
+++ b/README.md
@@ -218,9 +218,9 @@ Download and install folly with the parameters listed below:
 
 #### Windows (Vcpkg)
 
-folly is available in [Vcpkg](https://github.com/Microsoft/vcpkg#vcpkg-) and releases may be built via `vcpkg install folly`.
+folly is available in [Vcpkg](https://github.com/Microsoft/vcpkg#vcpkg) and releases may be built via `vcpkg install folly:x64-windows`.
 
-You may also use `vcpkg install folly --head` to build against `master`.
+You may also use `vcpkg install folly:x64-windows --head` to build against `master`.
 
 #### Other Linux distributions