Nit: add semicolons to the end of several modes.

Fixes codemirror#3842.

Author: Dominator008

mode/haskell-literate/haskell-literate.js

@@ -40,4 +40,4 @@
   }, "haskell")
 
   CodeMirror.defineMIME("text/x-literate-haskell", "haskell-literate")
-})
+});

mode/jsx/jsx.js

@@ -144,4 +144,4 @@
   }, "xml", "javascript")
 
   CodeMirror.defineMIME("text/jsx", "jsx")
-})
+});

mode/swift/swift.js

@@ -199,4 +199,4 @@
   })
 
   CodeMirror.defineMIME("text/x-swift","swift")
-})
+});

mode/yaml-frontmatter/yaml-frontmatter.js

@@ -65,4 +65,4 @@
       }
     }
   })
-})
+});