doc fixed

Author: Stephan Dilly

README.md

@@ -68,7 +68,7 @@ the simplest way to start playing around with `gitui` is to have `cargo` build/i
 cargo install gitui
 ```
 
-# diagnostics:
+# diagnostics
 
 to enable logging:
 ```

THEMES.md

@@ -4,7 +4,7 @@ default on light terminal:
 ![](assets/light-theme.png)
 
 to change the colors of the program you have to modify `theme.ron` file
-[Ron format](https://github.com/ron-rs/ron) located at config path (same as log paths). the list of valid 
+[Ron format](https://github.com/ron-rs/ron) located at config path (same as [log path](README.md#diagnostics)).
 
 Valid colors can be found in [ColorDef](./src/ui/style.rs#ColorDef) struct. note that rgb colors might not be supported 
 in every terminal.