haskell: Recommend use of hoogle --local

This works around the browser security restriction of
disallowing links from http:// to file://.

Changed files
+2 -6
doc
languages-frameworks
+2 -6
doc/languages-frameworks/haskell.md
···
Finally, you can run
```shell
-
hoogle server -p 8080
+
hoogle server -p 8080 --local
```
and navigate to http://localhost:8080/ for your own local
-
[Hoogle](https://www.haskell.org/hoogle/). Note, however, that Firefox and
-
possibly other browsers disallow navigation from `http:` to `file:` URIs for
-
security reasons, which might be quite an inconvenience. See [this
-
page](http://kb.mozillazine.org/Links_to_local_pages_do_not_work) for
-
workarounds.
+
[Hoogle](https://www.haskell.org/hoogle/).
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