Fix double escapes in pip command line.

PiperOrigin-RevId: 487028010
Change-Id: I27a37c2fba3e09e646c5e15ea48a3f5230074012

Author: Johannes Ballé

README.md

@@ -95,7 +95,7 @@ installed TensorFlow version. Run it in a cell before executing your Python
 code:
 
 ```
-!pip install tensorflow-compression~=$(pip show tensorflow | perl -p -0777 -e 's/.*Version: (\\d+\\.\\d+).*/\\1.0/sg')
+!pip install tensorflow-compression~=$(pip show tensorflow | perl -p -0777 -e 's/.*Version: (\d+\.\d+).*/\1.0/sg')
 ```
 
 Note: The binary packages of TFC are tied to TF with the same minor version