Fix git.io links

Author: wooorm

packages/remark-parse/lib/tokenizer.js

@@ -145,7 +145,7 @@ function factory(type) {
         // Capture stack-trace.
         self.file.fail(
           new Error(
-            'Incorrectly eaten value: please report this warning on http://git.io/vg5Ft'
+            'Incorrectly eaten value: please report this warning on https://git.io/vg5Ft'
           ),
           now()
         )

packages/remark-stringify/lib/visitors/code.js

@@ -65,7 +65,7 @@ function code(node, parent) {
       options.pedantic
     ) {
       self.file.fail(
-        'Cannot indent code properly. See http://git.io/vgFvT',
+        'Cannot indent code properly. See https://git.io/fxKR8',
         node.position
       )
     }

test/remark-process.js

@@ -36,7 +36,7 @@ test('remark().processSync(value)', function(t) {
         .data('settings', {pedantic: true, listItemIndent: '1'})
         .processSync(['* List', '', '        code()'].join('\n'))
     },
-    /Cannot indent code properly. See http:\/\/git.io\/vgFvT/,
+    /Cannot indent code properly. See https:\/\/git.io\/fxKR8/,
     'should throw when `pedantic` is `true`, `listItemIndent` is not `tab`, and compiling code in a list-item'
   )