Fix broken references to version 22 on README.md

Author: ruimarinho

README.md

@@ -10,8 +10,8 @@ A bitcoin-core docker image with support for the following platforms:
 
 ## Tags
 
-- `22.0`, `22`, `latest` ([22.0/Dockerfile](https://github.com/ruimarinho/docker-bitcoin-core/blob/master/22.0/Dockerfile)) [**multi-arch**]
-- `22.0-alpine`, `22.0-alpine` ([22.0/alpine/Dockerfile](https://github.com/ruimarinho/docker-bitcoin-core/blob/master/22.0/alpine/Dockerfile))
+- `22.0`, `22`, `latest` ([22/Dockerfile](https://github.com/ruimarinho/docker-bitcoin-core/blob/master/22/Dockerfile)) [**multi-arch**]
+- `22.0-alpine`, `22-alpine` ([22/alpine/Dockerfile](https://github.com/ruimarinho/docker-bitcoin-core/blob/master/22/alpine/Dockerfile))
 
 - `0.21.1`, `0.21` ([0.21/Dockerfile](https://github.com/ruimarinho/docker-bitcoin-core/blob/master/0.21/Dockerfile)) [**multi-arch**]
 - `0.21.1-alpine`, `0.21-alpine` ([0.21/alpine/Dockerfile](https://github.com/ruimarinho/docker-bitcoin-core/blob/master/0.21/alpine/Dockerfile))