add missing references to dash

ShellCheck/Checks/Commands.hs

@@ -337,7 +337,7 @@ checkInjectableFindSh = CommandCheck (Basename "find") (check . arguments)
 
     pattern = [
         (`elem` ["-exec", "-execdir"]),
-        (`elem` ["sh", "bash", "ksh"]),
+        (`elem` ["sh", "bash", "dash", "ksh"]),
         (== "-c")
         ]
     action (id, arg) =

ShellCheck/Parser.hs

@@ -2587,8 +2587,8 @@ readScriptFile = do
     verifyShell pos s =
         case isValidShell s of
             Just True -> return ()
-            Just False -> parseProblemAt pos ErrorC 1071 "ShellCheck only supports sh/bash/ksh scripts. Sorry!"
-            Nothing -> parseProblemAt pos InfoC 1008 "This shebang was unrecognized. Note that ShellCheck only handles sh/bash/ksh."
+            Just False -> parseProblemAt pos ErrorC 1071 "ShellCheck only supports sh/bash/dash/ksh scripts. Sorry!"
+            Nothing -> parseProblemAt pos InfoC 1008 "This shebang was unrecognized. Note that ShellCheck only handles sh/bash/dash/ksh."
 
     isValidShell s =
         let good = s == "" || any (`isPrefixOf` s) goodShells