Fixes godoc links in example tests (#459)

thanks for noticing this @mathetake

Signed-off-by: Adrian Cole <adrian@tetrate.io>

examples/basic/add_test.go

@@ -4,11 +4,11 @@ import (
 	"os"
 )
 
-// ExampleMain ensures the following will work:
+// Example_main ensures the following will work:
 //
 //	go build add.go
 //	./add 7 9
-func ExampleMain() {
+func Example_main() {
 
 	// Save the old os.Args and replace with our example input.
 	oldArgs := os.Args

examples/multiple-results/multiple-results_test.go

@@ -1,10 +1,10 @@
 package main
 
-// ExampleMain ensures the following will work:
+// Example_main ensures the following will work:
 //
 //	go build multiple-results.go
 //	./multiple-results
-func ExampleMain() {
+func Example_main() {
 
 	main()
 

examples/replace-import/replace-import_test.go

@@ -1,10 +1,10 @@
 package main
 
-// ExampleMain ensures the following will work:
+// Example_main ensures the following will work:
 //
 //	go build replace-import.go
 //	./replace-import
-func ExampleMain() {
+func Example_main() {
 
 	main()
 

examples/wasi/cat_test.go

@@ -2,11 +2,11 @@ package main
 
 import "os"
 
-// ExampleMain ensures the following will work:
+// Example_main ensures the following will work:
 //
 //	go build cat.go
 //	./cat ./test.txt
-func ExampleMain() {
+func Example_main() {
 
 	// Save the old os.Args and replace with our example input.
 	oldArgs := os.Args