fix the create docs (#880)

* fix the docs

* use function end

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Co-authored-by: Rafael Schouten <[email protected]>

src/create.jl

@@ -124,6 +124,7 @@ RasterStack("created.nc")
 └───────────────────────────────────────────────────────────────────────────────────────────┘
 ```
 """
+function create end
 # Create with a function that will be called to fill the raster
 create(f::Function, args...; kw...) = create(args...; kw..., f)
 # Create from Raster or RasterStack with no filename