updated book title

Author: learnbyexample

README.md

@@ -16,7 +16,7 @@ Free to read online versions:
 * [Perl One-Liners Guide](https://learnbyexample.github.io/learn_perl_oneliners/)
 * [100 Page Python Intro](https://learnbyexample.github.io/100_page_python_intro/)
 * [Practice Python Projects](https://learnbyexample.github.io/practice_python_projects/)
-* [Command line text processing with GNU Coreutils](https://learnbyexample.github.io/cli_text_processing_coreutils/)
+* [CLI text processing with GNU Coreutils](https://learnbyexample.github.io/cli_text_processing_coreutils/)
 * [Vim reference guide](https://learnbyexample.github.io/vim_reference/)
 * [Computing from the Command Line](https://learnbyexample.github.io/cli-computing/)
 * [Command line text processing with Rust tools](https://learnbyexample.github.io/cli_text_processing_rust/) — work-in-progress