fix(build): dune-format compliance — blank line + flags wrap (#90)

Author: hyperpolymath

dune

@@ -1,3 +1,4 @@
 ; Exclude vendored/snapshot subtrees that ship their own dune-project so the
 ; outer workspace does not see duplicate package definitions.
+
 (dirs :standard \ faces .build)

lib/dune

@@ -86,7 +86,8 @@
  ; will surface a Match_failure with file:line at runtime if exercised on an
  ; extern decl, which is the right signal for "this target has no story for
  ; host-supplied implementations".
- (flags (:standard -w -8-9))
+ (flags
+  (:standard -w -8-9))
  (preprocess
   (pps ppx_deriving.show ppx_deriving.eq ppx_deriving.ord sedlex.ppx)))