graph/layout: don't use archaic spelling
MODIFY
graph/layout/isomap.go
graph/layout/isomap.go
@@ -19,7 +19,7 @@ import (
// The all pair shortest path distances are calculated using the
// Floyd-Warshall algorithm and so IsomapR2 will not scale to large
// graphs. Graphs with more than one connected component cannot be
-// layed out by IsomapR2.
+// laid out by IsomapR2.
type IsomapR2 struct{}
// Update is the IsomapR2 spatial graph update function.

graph/layout: don't use archaic spelling