Docs: fix tables format error
Fixes:
@@ -5,6 +5,6 @@ or published to [`crates.io`](https://crates.io/index.html).
Currently it provides following library crates:
| Library | Description |
-|-|-|-|
+|-|-|
| [logging](logging/) | Facilities to setup logging subsystem based slog. |
| [safe-path](safe-path/) | Utilities to safely resolve filesystem paths. |
