doc: fix a bunch of things in the changelog.

doc/changelog.dox

@@ -683,7 +683,7 @@ Released 2019-10-24, tagged as
     @ref Trade::AnySceneImporter "AnySceneImporter" plugins now correctly
     recognize also uppercase file extensions (see
     [mosra/magnum#312](https://github.com/mosra/magnum/pull/312))
-    @ref Trade::TgaImporter "TgaImporter" now properly reports an error message
+-   @ref Trade::TgaImporter "TgaImporter" now properly reports an error message
     when opening an empty file
 -   @ref Trade::AbstractImporter::setFileCallback() now accepts callbacks with
     @cpp const @ce references to user data as well
@@ -885,7 +885,7 @@ Released 2019-10-24, tagged as
     have trivial destruction, but that may change in the future due to driver
     workarounds being added.
 -   @cpp Magnum/MeshTools/GenerateFlatNormals.h @ce is deprecated, use
-    @cpp Magnum/MeshTools/GenerateNormals.h @ce instead
+    @ref Magnum/MeshTools/GenerateNormals.h instead
 -   @cpp MeshTools::generateFlatNormals(const std::vector<UnsignedInt>&, const std::vector<Vector3>&) @ce
     is deprecated for doing too many things at once and being too tied to one
     particular STL container, use @ref MeshTools::generateFlatNormals(const Containers::StridedArrayView1D<const Vector3>&)
@@ -939,8 +939,8 @@ Released 2019-10-24, tagged as
     deprecated in 2018.04. The same functionality is available through free
     functions in the @ref Primitives namespace, use those instead.
 -   Removed templated overloads of @ref GL::Buffer::data(),
-    @ref GL::Buffer::subData() and @ref GL::Buffer::map() deprecated since
-    2017. Use the non-templated versions together with
+    @ref GL::Buffer::subData() and @ref GL::Buffer::map() deprecated
+    since 2017. Use the non-templated versions together with
     @ref Corrade::Containers::arrayCast().
 -   Removed @cpp GL::Context::DetectedDriver::AMD @ce and
     @cpp GL::Context::DetectedDriver::ProbablyAngle @ce aliases deprecated
@@ -1688,7 +1688,7 @@ Released 2018-10-23, tagged as
 -   @ref Math::Intersection::planeLine() taking a separate plane normal and
     position is deprecated, use @ref Math::planeEquation() and the overload
     taking a plane equation as @ref Math::Vector4 instead
--   @ref Audio::PlayableGroup::setClean() is deprecated in favor of
+-   @cpp Audio::PlayableGroup::setClean() @ce is deprecated in favor of
     @ref Audio::Listener::update(), as that one is a feature superset with
     clearer naming
 -   @ref MeshTools::compile() taking a @ref GL::BufferUsage and returning a
@@ -1989,7 +1989,7 @@ Released 2018-05-01, tagged as
 -   `Image*::type()` functions are deprecated as these are too GL-specific. The
     second format specifier is now available through @ref Image::formatExtra(),
     @ref ImageView::formatExtra() and @ref Trade::ImageData::formatExtra()
--   `Audio::Buffer::Format` is deprecated, use `Audio::BufferFormat` instead
+-   `Audio::Buffer::Format` is deprecated, use @ref Audio::BufferFormat instead
 -   `setData()` functions in the @ref Image and @ref CompressedImage classes
     are deprecated because they don't offer anything extra over simple
     move-assignment of a new instance.