Remove stray erroneous array definition

Author: amas0

src/reference-manual/types.qmd

@@ -474,7 +474,7 @@ model {
 Bounds (and offset and multiplier)
 for integer or real variables may be arbitrary expressions.
 The only requirement is that they only include variables that have
-been declared (though not necessarily defined) before the declaration.  array[N] row_vector[D] x;
+been declared (though not necessarily defined) before the declaration.
 If the bounds themselves are parameters, the behind-the-scenes
 variable transform accounts for them in the log Jacobian.