OWNERS: Fix Github handle

The `OWNERS` file contains an incorrect Github handle `honny1`. The correct Github handle is `Honny1`. This causes `/approve` comments to have no effect on PR. The `MAINTAINERS.md` file contains the correct Github handle.

Signed-off-by: Jan Rodák <[email protected]>

Author: Honny1

OWNERS

@@ -16,7 +16,7 @@ reviewers:
   - baude
   - flouthoc
   - giuseppe
-  - honny1
+  - Honny1
   - jakecorrenti
   - jwhonce
   - l0rd