all: format comments with go fmt ./... using Go 1.19

Signed-off-by: Elias Naur <mail@eliasnaur.com>

layout/context.go

@@ -37,13 +37,13 @@ type Context struct {
 
 // NewContext is a shorthand for
 //
-//   Context{
-//     Ops: ops,
-//     Now: e.Now,
-//     Queue: e.Queue,
-//     Config: e.Config,
-//     Constraints: Exact(e.Size),
-//   }
+//	Context{
+//	  Ops: ops,
+//	  Now: e.Now,
+//	  Queue: e.Queue,
+//	  Config: e.Config,
+//	  Constraints: Exact(e.Size),
+//	}
 //
 // NewContext calls ops.Reset and adjusts ops for e.Insets.
 func NewContext(ops *op.Ops, e system.FrameEvent) Context {

layout/doc.go

@@ -3,7 +3,7 @@
 /*
 Package layout implements layouts common to GUI programs.
 
-Constraints and dimensions
+# Constraints and dimensions
 
 Constraints and dimensions form the interface between layouts and
 interface child elements. This package operates on Widgets, functions
@@ -45,6 +45,5 @@ This example both aligns and insets a child:
 
 More complex layouts such as Stack and Flex lay out multiple children,
 and stateful layouts such as List accept user input.
-
 */
 package layout