Update documentation about allowed characters in BUILD labels

RELNOTES: Fix documentation on allowed target names.
PiperOrigin-RevId: 276705062
diff --git a/site/docs/build-ref.html b/site/docs/build-ref.html
index 7d32ddf..5a0991c 100644
--- a/site/docs/build-ref.html
+++ b/site/docs/build-ref.html
@@ -305,11 +305,7 @@
 
   <a href='query.html'>Bazel Query Language</a>.
 
-  All of the following are forbidden in labels: any sort of white
-  space, braces, brackets, or parentheses; wildcards such
-  as <code>*</code>; shell metacharacters such
-  as <code>&gt;</code>, <code>&amp;</code> and <code>|</code>; etc.
-  This list is not comprehensive; the precise details are below.
+  The precise details of allowed target names are below.
 </p>
 
 <h4 id="name">Target names, <code>//...:<b>target-name</b></code></h4>
@@ -322,7 +318,7 @@
   Target names must be composed entirely of
   characters drawn from the set <code>a</code>–<code>z</code>,
   <code>A</code>–<code>Z</code>, <code>0</code>–<code>9</code>,
-  and the punctuation symbols <code>!%-@^_` "#$&'()*-+,;<=>?[]{|}~</code>.
+  and the punctuation symbols <code>!%-@^_` "#$&'()*-+,;<=>?[]{|}~/.</code>.
   Do not use <code>..</code> to refer to files in other packages; use
   <code>//<var>packagename</var>:<var>filename</var></code> instead.
   Filenames must be relative pathnames in normal form, which means