Minor presentation tweak to make Sequence/Set/Dictionary line up in the grammar like it does in the abstract model definition

preserves-text.md

@@ -55,7 +55,7 @@ Standalone documents may have trailing whitespace.
 Any `Value` may be preceded by whitespace.
 
              Value = ws (Record / Collection / Atom / Embedded)
-        Collection = Sequence / Dictionary / Set
+        Collection = Sequence / Set / Dictionary
               Atom = Boolean / String / ByteString /
                      QuotedSymbol / SymbolOrNumber
 
@@ -64,18 +64,18 @@ label-`Value` followed by its field-`Value`s.
 
             Record = "<" Value *Value ws ">"
 
-`Sequence`s are enclosed in square brackets. `Dictionary` values are
-curly-brace-enclosed colon-separated pairs of values. `Set`s are
-written as values enclosed by the tokens `#{` and
-`}`.[^printing-collections] It is an error for a set to contain
+`Sequence`s are enclosed in square brackets. `Set`s are written as
+values enclosed by the tokens `#{` and `}`. `Dictionary` values are
+curly-brace-enclosed colon-separated pairs of
+values.[^printing-collections] It is an error for a set to contain
 duplicate elements or for a dictionary to contain duplicate keys. When
-printing sets and dictionaries, implementations *SHOULD* order
-elements resp. keys with respect to the [total order over
+printing sets and dictionaries, implementations *SHOULD* order elements
+resp. keys with respect to the [total order over
 `Value`s](preserves.html#total-order).[^rationale-print-ordering]
 
-          Sequence = "[" *Value ws "]"
-        Dictionary = "{" *(Value ws ":" Value) ws "}"
-               Set = "#{" *Value ws "}"
+          Sequence =  "["  *Value               ws "]"
+               Set = "#{"  *Value               ws "}"
+        Dictionary =  "{" *(Value ws ":" Value) ws "}"
 
   [^printing-collections]: **Implementation note.** When implementing
     printing of `Value`s using the textual syntax, consider supporting