Merge pull request #1020 from GenomicsStandardsConsortium/1019-fix-adjacent_environmentstring_serialization

tidied up (to-be-removed!) `adjacent_environment.string_serialization`

Author: turbomam

src/mixs/schema/mixs.yaml

@@ -3997,7 +3997,7 @@ slots:
       - adjacent
       - environment
       - site
-    string_serialization: '{termLabel}{[termID]}'
+    string_serialization: '{termLabel} [{termID}]'
     slot_uri: MIXS:0001121
     multivalued: true
   aero_struc: