internal/lsp: fix typo

Change-Id: I04164ea5b57ebb828ecb837caa397c9e736f4d57
Reviewed-on: https://go-review.googlesource.com/c/156457
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/internal/lsp/cmd/cmd.go b/internal/lsp/cmd/cmd.go
index a959583..f5041d9 100644
--- a/internal/lsp/cmd/cmd.go
+++ b/internal/lsp/cmd/cmd.go
@@ -55,7 +55,7 @@
 // Run takes the args after top level flag processing, and invokes the correct
 // sub command as specified by the first argument.
 // If no arguments are passed it will invoke the server sub command, as a
-// temporary measure for compatability.
+// temporary measure for compatibility.
 func (app *Application) Run(ctx context.Context, args ...string) error {
 	if len(args) == 0 {
 		tool.Main(ctx, &app.Server, args)