Merge pull request #6931 from oliver-sanders/typo

fix typo

Author: hjoliver

cylc/flow/cfgspec/workflow.py

@@ -1185,7 +1185,7 @@ def get_script_common_text(this: str, example: Optional[str] = None):
 
                    platform = $(command)
 
-                The configured command will be evaulated for each job
+                The configured command will be evaluated for each job
                 submission (i.e, different submissions of the same task may
                 submit on different platforms).