crypto/tls: add no-shared to openssl build instructions

This prevents the custom-built version of openssl prefering the system
libraries over the ones compiled with the specified (weak crypto)
options necessary to generate the updates. This difference can lead to
confusing failures when updating the tests.

Fixes #31809

Change-Id: I2dd257f3121d6c6c62c6aeba52e1c74046b3c584
GitHub-Last-Rev: 6d4eeaf
GitHub-Pull-Request: #41630
Reviewed-on: https://go-review.googlesource.com/c/go/+/257517
Trust: Emmanuel Odeke <[email protected]>
Reviewed-by: Filippo Valsorda <[email protected]>

Author: thomwiggers

src/crypto/tls/handshake_test.go

@@ -86,7 +86,7 @@ func checkOpenSSLVersion() error {
 	println("to update the test data.")
 	println("")
 	println("Configure it with:")
-	println("./Configure enable-weak-ssl-ciphers")
+	println("./Configure enable-weak-ssl-ciphers no-shared")
 	println("and then add the apps/ directory at the front of your PATH.")
 	println("***********************************************")