hrefs in toc faulty

Hello, 
when adding a numeration in my headings the generated toc href links do not remove the "." in the tag. 
e.g. heading: 
```
<h2 id="31-some-text"><a class="header-link" href="#31-some-text"></a>3.1 Some text</h2>
```
toc:
```
<li class="sidebar-header-2"><a href="#3.1-some-text">3.1 Some text</a></li>
```