Fix 6 unresolved symbol links in documentation. (#511)

Also, remove no longer needed @comment information about these links.

Author: d-ronnqvist

Sources/ArgumentParser/Documentation.docc/Extensions/Argument.md

@@ -8,16 +8,8 @@
 - ``init(help:completion:)-4p94d``
 - ``init(help:completion:transform:)-3fjtc``
 - ``init(help:completion:transform:)-7yn32``
-
-@Comment {
-  The following symbols are copied from the preview website, but give a warning
-  when built and don't show up in this section in the rendered navigation in
-  either Xcode or the preview website. Instead, these symbols end up in the 
-  default-generated Initializers section.
-}
-
-- ``init(wrappedvalue:help:completion:)``
-- ``init(wrappedvalue:help:completion:transform:)``
+- ``init(wrappedValue:help:completion:)``
+- ``init(wrappedValue:help:completion:transform:)``
 
 ### Array Arguments
 

Sources/ArgumentParser/Documentation.docc/Extensions/Option.md

@@ -10,21 +10,7 @@
 - ``init(name:parsing:help:completion:transform:)-25g7b``
 - ``init(wrappedValue:name:parsing:help:completion:transform:)-2llve``
 - ``SingleValueParsingStrategy``
-
-@Comment {
-  This gives a warning and doesn't show up here, but doesn't show up in the
-  Initializers section, either. If I omit it here, then it shows up in the
-  Initializers section.
-}
-
-- ``init(wrappedValue:name:parsing:help:completion:)-7ilku``
-
-@Comment {
-  This gives a warning and doesn't show up here, but is in the Initializers
-  section.
-}
-
-- ``init(wrappedvalue:name:parsing:help:completion:)-7xcum``
+- ``init(wrappedValue:name:parsing:help:completion:)-7xcum``
 
 ### Array Options
 
@@ -42,11 +28,5 @@
 ### Deprecated APIs
 
 - ``init(wrappedValue:name:parsing:completion:help:)``
-
-@Comment {
-  These give a warning and don't show up here, but are in the Initializers
-  section.
-}
-
-- ``init(wrappedvalue:name:parsing:help:completion:)-4pl7h``
-- ``init(wrappedvalue:name:parsing:help:completion:transform:)-6rqji``
+- ``init(wrappedValue:name:parsing:help:completion:)-4pl7h``
+- ``init(wrappedValue:name:parsing:help:completion:transform:)-6rqji``