Fix cabal file parse error

ghc-mod.cabal

@@ -189,15 +189,15 @@ Executable ghc-mod
   GHC-Options:          -Wall -fno-warn-deprecations -threaded
   Default-Extensions:   ConstraintKinds, FlexibleContexts
   HS-Source-Dirs:       src
-  Build-Depends:        base      < 5 && >= 4.0,
-                      , async     < 2.1,
-                      , directory < 1.3,
-                      , filepath  < 1.5,
-                      , pretty    < 1.2,
-                      , process   < 1.3,
-                      , split     < 0.3,
-                      , mtl       < 2.3 && >= 2.0,
-                      , ghc       < 7.11,
+  Build-Depends:        base      < 5 && >= 4.0
+                      , async     < 2.1
+                      , directory < 1.3
+                      , filepath  < 1.5
+                      , pretty    < 1.2
+                      , process   < 1.3
+                      , split     < 0.3
+                      , mtl       < 2.3 && >= 2.0
+                      , ghc       < 7.11
                       , fclabels  ==2.0.*
                       , ghc-mod