doc/go1.17: linkify time.UnixMilli and time.UnixMicro

Change-Id: I8503c4649fc42670f13d981f98af480467d6a3e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/332829
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

Author: tklauser

doc/go1.17.html

@@ -1132,10 +1132,13 @@ <h3 id="minor_library_changes">Minor changes to the library</h3>
 
     <p><!-- CL 293349 -->
       The new <a href="/pkg/time/#Time.UnixMilli"><code>Time.UnixMilli</code></a> and
-      <a href="/pkg/time/#Time.UnixMicro"><code>Time.UnixMicro</code></a> methods return the number of milliseconds and
-      microseconds elapsed since January 1, 1970 UTC respectively.<br>
-      The new <code>UnixMilli</code> and <code>UnixMicro</code> functions return local Time corresponding to given
-      Unix time.
+      <a href="/pkg/time/#Time.UnixMicro"><code>Time.UnixMicro</code></a>
+      methods return the number of milliseconds and microseconds elapsed since
+      January 1, 1970 UTC respectively.
+      <br />
+      The new <a href="/pkg/time/#UnixMilli"><code>UnixMilli</code></a> and
+      <a href="/pkg/time/#UnixMicro"><code>UnixMicro</code></a> functions
+      return the local <code>Time</code> corresponding to the given Unix time.
     </p>
 
     <p><!-- CL 300996 -->