add docs to configs (#4281)

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

internal/packagemetadata/generate/main.go

@@ -5,8 +5,9 @@ import (
 	"os"
 	"strings"
 
-	"github.com/anchore/syft/internal/packagemetadata"
 	"github.com/dave/jennifer/jen"
+
+	"github.com/anchore/syft/internal/packagemetadata"
 )
 
 // This program is invoked from syft/internal and generates packagemetadata/generated.go

internal/sourcemetadata/generate/main.go

@@ -4,8 +4,9 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/anchore/syft/internal/sourcemetadata"
 	"github.com/dave/jennifer/jen"
+
+	"github.com/anchore/syft/internal/sourcemetadata"
 )
 
 // This program is invoked from syft/internal and generates sourcemetadata/generated.go