Fix some comments (#899)

Author: rustco

Diff for: docs/know-problems.md

@@ -1,7 +1,7 @@
 # Known Problems
 
 There are some problems I discovered during development. 
-And I don't think it has to do anything with crossterm but it has to do whit how terminals handle ANSI or WinApi. 
+And I don't think it has to do anything with crossterm but it has to do with how terminals handle ANSI or WinApi. 
 
 ## WinAPI
 

Diff for: src/style/types/colored.rs

@@ -19,7 +19,7 @@ pub enum Colored {
     /// A background color.
     BackgroundColor(Color),
     /// An underline color.
-    /// Imporant: doesnt work on windows 10 or lower.
+    /// Important: doesn't work on windows 10 or lower.
     UnderlineColor(Color),
 }