Update README.md

Author: jayponder

README.md

@@ -25,12 +25,12 @@ The executables included in these images were compiled on a recent computer. It
 <h2>Installation Steps</h2>
 
 Use `Git` to retrieve the source code. If you want to specify a release version,
-use command `git clone --depth 1 --branch $VERSION https://github.com/TinkerTools/tinker9`.
+use command `git clone --depth 1 --branch $VERSION https://github.com/TinkerTools/tinker-gpu`.
 Do not download the zip or tarball file from the release page.
 
    1. [Prerequisites](doc/manual/m/install/preq.rst)
    2. [Download the Canonical Tinker (important to get the REQUIRED version)](doc/manual/m/install/tinker.rst)
-   3. [Build Tinker9 with CMake](doc/manual/m/install/buildwithcmake.rst)
+   3. [Build Tinker-GPU with CMake](doc/manual/m/install/buildwithcmake.rst)
 
 Examples of other successful builds are shown [here](https://github.com/TinkerTools/tinker9/discussions/121).