[LyX/master] Fix the Unicode encoding of langle/rangle

[Thibaut Cuvelier]

commit ed052a76915e90a414f7a2631b8e4dee8cb3b3c8
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Thu Oct 28 23:52:30 2021 +0200

    Fix the Unicode encoding of langle/rangle
    
    Author: lynx
    
    Related issue: 12411.
    https://www.lyx.org/trac/ticket/12411
    
    The previous mapping was for HTML 4, the new one is for HTML 5.
---
 lib/symbols |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/symbols b/lib/symbols
index 2e097e7..8e22f48 100644
--- a/lib/symbols
+++ b/lib/symbols
@@ -438,8 +438,8 @@ Uparrow            cmsy         42 221 mathrel  ⇑          &#x21D1;
 Downarrow          cmsy         43 223 mathrel  ⇓          &#x21D3;
 Updownarrow        cmsy        109   0 mathrel  ⇕          &#x21D5;
 backslash          cmsy        110   0 mathord  \          &#x005C;
-rangle             cmsy        105 241 mathclose  ⟩        &#x232A;
-langle             cmsy        104 225 mathopen  ⟨         &#x2329;
+rangle             cmsy        105 241 mathclose  ⟩        &#x27E9;
+langle             cmsy        104 225 mathopen  ⟨         &#x27E8;
 rbrace             cmsy        103   0 mathclose  }        &#x007D;
 lbrace             cmsy        102   0 mathopen  {         &#x007B;
 rceil              cmsy        101 249 mathclose  ⌉       &#x2309;