Update Readme

README.md

@@ -10,13 +10,15 @@ newline to stdout. This can be an alternative to [`sd_notify(3)`] or
 
 ## Installation
 
-There's a package published on PyPi, so it can be installed either with `pip`,
-or globally with `pipx`:
+There's a [package published on PyPi][1], so it can be installed either with
+`pip`, or globally with `pipx`:
 
 ```
 $ sudo PIPX_HOME=/opt/pipx PIPX_BIN_DIR=/usr/local/bin pipx install sdnotify-wrapper-py
 ```
 
+[package]: https://pypi.org/project/sdnotify-wrapper-py/
+
 ## Usage
 
 In your service write one line to stdout whenever the service is ready (make
@@ -55,13 +57,13 @@ systemd when it reads a newline and exit.
 ## Why Python?
 
 `sdnotify-wrapper` is a tool originally written by Laurent Bercot:
-[`sdnotify-wrapper.c`][1]. Unfortunately this tool is not packaged for any of
-the major Linux distributions, so it's not a great user experience if your
-service requires this mechanism.
+[`sdnotify-wrapper.c`]. Unfortunately this tool is not packaged for any of the
+major Linux distributions, so it's not a great user experience if your service
+requires this mechanism.
 
 I chose to reimplement this tool in Python mainly, because it's easier to
 install it with a Python package manager. In doing this, I hope this readiness
 notification mechanism will be adopted by more projects and the original tool
 will be packaged by more distributions.
 
-[1]: https://www.skarnet.org/software/misc/sdnotify-wrapper.c
+[`sdnotify-wrapper.c`]: https://www.skarnet.org/software/misc/sdnotify-wrapper.c