fix(page): replace section svg with sign

- https://en.wikipedia.org/wiki/Section_sign

themes/chameleon/scripts/heading-link.js

@@ -6,7 +6,6 @@
 */
 
 const { slugize, stripHTML } = require('hexo-util')
-const svg = '<img src="/svg/link.svg">'
 
 const anchorId = (str, transformOption) => {
   return slugize(str.trim(), { transform: transformOption })
@@ -27,6 +26,6 @@ hexo.extend.filter.register('marked:renderer', function (renderer) {
     }
 
     // add headerlink
-    return `<h${level} id="${id}">${text} <a href="#${id}" class="headerlink" title="${stripHTML(text)}">${svg}</a></h${level}>`
+    return `<h${level} id="${id}">${text} <a href="#${id}" class="headerlink" title="${stripHTML(text)}">§</a></h${level}>`
   }
 })

themes/chameleon/source/css/_source.css

@@ -734,6 +734,8 @@ svg#share:hover {
 unhide (via JS) if Web Share API is supported */
 .article-title a#btnshare {
   display: none;
+  height: 1em;
+  width: 1em;
 }
 
 .article-title a#btnshare img {
@@ -746,12 +748,6 @@ unhide (via JS) if Web Share API is supported */
 .article .article-entry a.headerlink,
 .article-title a#btnshare {
   margin-left: 0.5em;
-  height: 1em;
-  width: 1em;
-}
-
-.article .article-entry a.headerlink {
-  display: inline-block;
 }
 
 @media (max-width: 768px) {

themes/chameleon/source/css/chameleon.css

@@ -1054,6 +1054,8 @@ svg#share:hover {
 unhide (via JS) if Web Share API is supported */
 .article-title a#btnshare {
   display: none;
+  height: 1em;
+  width: 1em;
 }
 
 .article-title a#btnshare img {
@@ -1066,12 +1068,6 @@ unhide (via JS) if Web Share API is supported */
 .article .article-entry a.headerlink,
 .article-title a#btnshare {
   margin-left: 0.5em;
-  height: 1em;
-  width: 1em;
-}
-
-.article .article-entry a.headerlink {
-  display: inline-block;
 }
 
 @media (max-width: 768px) {