add missing 'y'

Known-Issues.md

@@ -22,6 +22,6 @@ This issue occurs because `jsoncpp` changes the name of their `.so` file every r
 This behaviour was introduced in [`#831`](https://github.com/jaagr/polybar/pull/831), to resolve the issue described in [`#759`](https://github.com/jaagr/polybar/issues/759). There is no way to resolve this without some major code changes to the renderer.
 
 ## `override-redirect` in i3
-**Problem:** i3 and polybar sometimes interact quite weirdly and often `override-redirect = true` is needed to resolve it. This however makes i3 not reserve space for the polybar window, making other windows overlap polybar. There doesn't seem to be that much that we can do about this from polbar's side, because as soon as we need to use `override-redirect = true`, we can't tell i3 to reserve space for the polybar window.
+**Problem:** i3 and polybar sometimes interact quite weirdly and often `override-redirect = true` is needed to resolve it. This however makes i3 not reserve space for the polybar window, making other windows overlap polybar. There doesn't seem to be that much that we can do about this from polybar's side, because as soon as we need to use `override-redirect = true`, we can't tell i3 to reserve space for the polybar window.
 
 **Workaround:** The workaround that some people use, is to create a full-width fully transparent dummy bar on the same monitor and in the same position, so that i3 reserves space for this dummy bar, effectively also reserving space for our actual bar.