Doc TwigJS: fix links

doc/TwigJS.md

@@ -28,8 +28,8 @@ Assign value to variable:
 ```
 
 For more information, please visit:
-* [https://twig.symfony.com/](Page of the original Twig template language)
-* [https://github.com/twigjs/twig.js/wiki](Wiki of the TwigJS template language which is almost identical to Twig)
+* [Page of the original Twig template language](https://twig.symfony.com/)
+* [Wiki of the TwigJS template language which is almost identical to Twig](https://github.com/twigjs/twig.js/wiki)
 
 #### TwigJS templates
 When rendering map features, the following properties are available:
@@ -68,9 +68,9 @@ There are several extra functions defined for the TwigJS language:
 Extra filters:
 * filter websiteUrl: return a valid http link. Example: `{{ "www.google.com"|websiteUrl }}` -> "http://www.google.com"; `{{ "https://google.com"|websiteUrl }}` -> "https://google.com"
 * filter `matches`: regular expression match. e.g. `{{ "test"|matches("e(st)$") }}` returns `[ "est", "st" ]`. Returns null if it does not match.
-* filter `osmParseDate`: returns an array with the lower and upper boundary of the year of a `start_date` tag. See [https://github.com/plepe/openstreetmap-date-parser](openstreetmap-date-parser) for details.
-* filter `osmFormatDate`: returns the date as localized strings. Accept an object for options, e.g. `{{ tags.start_date|osmFormatDate({ format: 'short' }) }}`. See [https://github.com/plepe/openstreetmap-date-format](openstreetmap-date-format) for details.
-* filter `natsort`: Sort an array naturally, see [https://www.npmjs.com/package/natsort](natsort) for details.
+* filter `osmParseDate`: returns an array with the lower and upper boundary of the year of a `start_date` tag. See [openstreetmap-date-parser](https://github.com/plepe/openstreetmap-date-parser) for details.
+* filter `osmFormatDate`: returns the date as localized strings. Accept an object for options, e.g. `{{ tags.start_date|osmFormatDate({ format: 'short' }) }}`. See [openstreetmap-date-format](https://github.com/plepe/openstreetmap-date-format) for details.
+* filter `natsort`: Sort an array naturally, see [natsort](https://www.npmjs.com/package/natsort) for details.
 * filter `ksort`: Sort an associative array by key (alphabetic)
 * filter `unique`: Remove duplicate elements from an array.
 * filter `md5`: calculate md5 hash of a string.