Fix broken links

website/usage/_install/_troubleshooting.jade

@@ -22,7 +22,7 @@ p
     |  to see which models are available for your spaCy version. If you're using
     |  an old version, consider upgrading to the latest release. Note that while
     |  spaCy supports tokenization for
-    |  #[+a("/usage/models/#languages") a variety of languages],
+    |  #[+a("/usage/models#languages") a variety of languages],
     |  not all of them come with statistical models. To only use the tokenizer,
     |  import the language's #[code Language] class instead, for example
     |  #[code from spacy.fr import French].

website/usage/_models/_install.jade

@@ -36,7 +36,7 @@ p
     |  By default, this will install the model into your #[code site-packages]
     |  directory. You can then use #[code spacy.load()] to load it via its
     |  package name, create a #[+a("#usage-link") shortcut link] to assign it a
-    |  custom name, or #[+a("usage-import") import it] explicitly as a module.
+    |  custom name, or #[+a("#usage-import") import it] explicitly as a module.
     |  If you need to download models as part of an automated process, we
     |  recommend using pip with a direct link, instead of relying on spaCy's
     |  #[+api("cli#download") #[code download]] command.

website/usage/_processing-pipelines/_pipelines.jade

@@ -143,7 +143,7 @@ p
         |  #[code disable], which takes a list of pipeline component names.
         |  This lets you disable pre-defined components when loading
         |  a model, or initialising a Language class via
-        |  #[+api("language-from_disk") #[code from_disk]].
+        |  #[+api("language#from_disk") #[code from_disk]].
 
     +code-new.
         nlp = spacy.load('en', disable=['ner'])

website/usage/_visualizers/_dep.jade

@@ -52,7 +52,7 @@ p
 
 p
     |  For a list of all available options, see the
-    |  #[+api("displacy#options") #[code displacy] API documentation].
+    |  #[+api("top-level#displacy_options") #[code displacy] API documentation].
 
 +aside-code("Options example").
     options = {'compact': True, 'bg': '#09a3d5',