vtd: Fix typo in README

Author: cassava

optional/vtd/vendor/vtd-api-2.2.0/README.md

@@ -4,7 +4,7 @@ Conan VTD-API Package
 In order to separate build and runtime dependencies, the VTD API sources files
 are put in their own Conan package.
 
-The `vtd/2.20@cloe-restricted/stable` package must be available. For
+The `vtd/2.2.0@cloe-restricted/stable` package must be available. For
 instructions on how to build it, see the [README](../vtd/README.md) in the
 [vtd](../vtd) directory.