Added ref to #108 (Translating "mount" and "unmount" in sentences)

Author: LucaBlackDragon

Diff for: GLOSSARY.md

@@ -44,3 +44,4 @@ If you encounter one of those expressions for the first time, it might be worth
 - `refactor` ([#9](https://github.com/reactjs/it.reactjs.org/issues/9))
 - `event handler` ([#10](https://github.com/reactjs/it.reactjs.org/issues/10))
 - `event listener` ([#10](https://github.com/reactjs/it.reactjs.org/issues/10))
+- `mount` and `unmount` in sentences ([#108](https://github.com/reactjs/it.reactjs.org/issues/108))