fix: remove wildcards where unnecessary

Since config variables are consistent across all serotypes, wildcards are unnecessary.

Co-authored-by: Thomas Sibley <tom@zulutango.org>

Snakefile

@@ -89,7 +89,7 @@ rule wrangle_metadata:
     output:
         metadata="results/wrangled_metadata_{serotype}.tsv",
     params:
-        strain_id=lambda w: config.get("strain_id_field", "strain"), #accession
+        strain_id=config.get("strain_id_field", "strain"), #accession
     shell:
         """
         csvtk -t rename -f strain -n strain_original {input.metadata} \
@@ -313,7 +313,7 @@ rule final_strain_name:
         auspice_json="auspice/dengue_{serotype}.json",
         root_sequence="auspice/dengue_{serotype}_root-sequence.json",
     params:
-        display_strain_field=lambda w: config.get("display_strain_field", "strain"),
+        display_strain_field=config.get("display_strain_field", "strain"),
     shell:
         """
         python3 bin/set_final_strain_name.py \