chore: update readme

Author: leg100

README.md

@@ -2,7 +2,7 @@
 <a title="This tool is Tool of The Week on Terminal Trove, The $HOME of all things in the terminal" href="https://terminaltrove.com/">
 <img align="right" src="https://terminaltrove.com/assets/media/terminal_trove_tool_of_the_week_green_on_dark_grey_bg.png" alt="Terminal Trove Tool of The Week" height="40"></a></h1>
 
-A TUI application for terraform power users.
+A terminal user interface for terraform power users.
 
 * Perform tasks in parallel (plan, apply, init, etc)
 * Interactively manage state resources (targeted plans, move, delete, etc)