html/template: fix unavailable url

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Change-Id: I76411ee00785f3d92014c5012e4efb446924adaf
Reviewed-on: https://go-review.googlesource.com/c/go/+/487835
Reviewed-by: Dmitri Shuralyov <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Reviewed-by: Andrew Polukhin <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Run-TryBot: Ian Lance Taylor <[email protected]>
Run-TryBot: shuang cui <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>

Author: cuishuang

src/html/template/escape.go

@@ -758,7 +758,7 @@ func (e *escaper) escapeText(c context, n *parse.TextNode) context {
 		} else if isComment(c.state) && c.delim == delimNone {
 			switch c.state {
 			case stateJSBlockCmt:
-				// https://es5.github.com/#x7.4:
+				// https://es5.github.io/#x7.4:
 				// "Comments behave like white space and are
 				// discarded except that, if a MultiLineComment
 				// contains a line terminator character, then

src/html/template/transition.go

@@ -397,7 +397,7 @@ func tLineCmt(c context, s []byte) (context, int) {
 		return c, len(s)
 	}
 	c.state = endState
-	// Per section 7.4 of EcmaScript 5 : https://es5.github.com/#x7.4
+	// Per section 7.4 of EcmaScript 5 : https://es5.github.io/#x7.4
 	// "However, the LineTerminator at the end of the line is not
 	// considered to be part of the single-line comment; it is
 	// recognized separately by the lexical grammar and becomes part