docs: update

README.md

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-<h1 align="center">pure bash</h1> <p align="center">A [WIP] collection of
-pure bash alternatives to external processes.</p>
+<h1 align="center">pure bash bible</h1> <p align="center">A [WIP]
+collection of pure bash alternatives to external processes.</p>
 
 The goal of this repository is to document known and unknown methods of
 doing various tasks using only built-in bash features. Using the snippets