Fixed a typo in the index.md

Author: Baudin999

docs/index.md

@@ -22,7 +22,7 @@ documentation language with some small features taken from real programming lang
 clear. ZDragon is _not_ a Turing complete programming language. Nor does it try to be one. ZDragon
 lets you write down your thought and it will spit out models and diagrams.
 
-[Running ZDragon](./running_zdragon.md)<br />[The CLI too](./cli.html) <br />
+[Running ZDragon](./running_zdragon.md)<br />[The CLI tool](./cli.html) <br />
 [The Language](./language.html) <br /> [Flows (Sequence Diagrams)](./flows.html) <br />
 
 ## Roadmap