fix: replace . with - in slugs (#39168)

utils/slugs.test.js

@@ -14,12 +14,16 @@ describe('dasherize', () => {
     expect(dasherize('the space  between')).toBe('the-space--between');
   });
 
+  it('converts dots to dashes', () => {
+    expect(dasherize('the..dots.. between')).toBe('the--dots---between');
+  });
+
   it('trims off surrounding whitespace', () => {
     expect(dasherize('  the space  between    ')).toBe('the-space--between');
   });
 
-  it('removes everything except letters, numbers, - and .', () => {
-    expect(dasherize('1a!"£$%^*()_+=-.b2')).toBe('1a-.b2');
+  it('removes everything except letters, numbers and -', () => {
+    expect(dasherize('1a!"£$%^*()_+=-.b2')).toBe('1a--b2');
   });
 });