cleanup: update README

Signed-off-by: Dharun Krishna K B <[email protected]>

Author: kbdharun

README.md

@@ -24,6 +24,12 @@
 pip install tldr
 ```
 
+Install the Python Client in an isolated environment using [`pipx`](https://pipx.pypa.io/stable/):
+
+```bash
+pipx install tldr
+```
+
 ### from Arch Linux repository
 
 ```bash
@@ -95,8 +101,10 @@ export TLDR_PLATFORM=linux
 ```
 
 ### Platform
-Determines the platform that tldr will use based on the `TLDR_PLATFORM` environment variable or system detection.
-For a complete list of supported platform values, refer to the help for the `--platform` option flag.
+
+Determines the platform that tldr will use based on the custom `TLDR_PLATFORM` environment variable or automatically via system platform detection.
+
+For a complete list of supported platform values for the `--platform` option flag, refer to the [help page](#usage).
 
 ### Cache