exclude play.rlo from linkchecks

Author: mark-i-m

book.toml

@@ -16,6 +16,6 @@ level = 0
 [output.linkcheck]
 command = "../../ci/linkcheck.sh"
 follow-web-links = true
-exclude = [ "crates\\.io", "gcc\\.godbolt\\.org", "youtube\\.com", "youtu\\.be", "dl\\.acm\\.org", "cs\\.bgu\\.ac\\.il", "www\\.amazon\\.com", "www\\.rustaceans\\.org" ]
+exclude = [ "crates\\.io", "gcc\\.godbolt\\.org", "youtube\\.com", "youtu\\.be", "dl\\.acm\\.org", "cs\\.bgu\\.ac\\.il", "www\\.amazon\\.com", "www\\.rustaceans\\.org", "play\\.rust-lang\\.org" ]
 cache-timeout = 86400
 warning-policy = "error"