Filter.md

@@ -16,7 +16,7 @@ Sometimes this area is higher than the rest, this is called "Resonance":
 ![Different Types of Filters](http://modular.atoav.com/x/Filter_types_resonant.png)
 
 ## Filters
-There are many different ways to build a filter, each with it's own unique character.  
+There are many different ways to build a filter, each with its own unique character.  
 See the Doepfer A-124 Wasp Filter in [this youtube video](https://www.youtube.com/watch?v=A-ZTgWFzDM8)   
 See the Doepfer A-106-5 SEM Filter in [this youtube video](https://www.youtube.com/watch?v=4pZDcn6qNn8)   
 See the Polivoks VCF in [this youtube video](https://youtu.be/Q5pOU6YaDa0?t=135)