docs: minor fixes to HA docs (#666)

website/content/docs/installing/high-availability.mdx

@@ -52,4 +52,4 @@ For general configuration, we recommend the following:
 
 When running Boundary controller as a service we recommend storing the file at `/etc/boundary-controller.hcl`. A `boundary` user and group should exist to manage this configuration file and to further restrict who can read and modify it.
 
-For detailed configuration options, see our [configuration docs](docs/configuration).
+For detailed configuration options, see our [configuration docs](/docs/configuration).

website/content/docs/installing/systemd.mdx

@@ -17,8 +17,7 @@ This section covers how to install Boundary under the [Systemd]() init system on
 1. `/etc/boundary-${TYPE}.hcl`: Configuration file for the boundary service
    See above example configurations.
 
-2. `/usr/local/bin/boundary`: The Boundary binary
-   Can build from https://github.com/hashicorp/boundary or download binary from our release pages.
+2. `/usr/local/bin/boundary`: The Boundary binary. Can build from [GitHub repository](https://github.com/hashicorp/boundary) or download binary from our [release pages](https://www.boundaryproject.io/downloads).
 
 3. `/etc/systemd/system/boundary-${TYPE}.service`: Systemd unit file for the Boundary service
    Example: