chore: update README.md (#23)

README.md

@@ -14,7 +14,7 @@ This repo contains the following, in no particular order:
 - a hello world snakefile in `src/snakemake/hello_world.smk`
   - this uses the `onerror` directive to better display rule errors, in particular the last file
     lines of the rule's log
-- a python toolkit (`clien-tools`) in `src/python/pyclient`
+- a python toolkit (`client-tools`) in `src/python/pyclient`
   - uses `defopt` for arg parsing
   - has custom logging in `core/logging.py`
   - has utility methods to support the above `onerror` snakemake directive in `pipeline/snakemake_utils.py`