Fix markdown

Author: GuillaumeGomez

_posts/2019-02-21-new-release.md

@@ -151,16 +151,16 @@ For the interested ones, here is the list of the merged pull requests:
  * [generate from_glib_borrow implementation for const pointers](https://github.com/gtk-rs/glib/pull/428)
  * [Replace deprecated tempdir crate](https://github.com/gtk-rs/glib/pull/427)
  * [Implement DerefMut for class structs too](https://github.com/gtk-rs/glib/pull/426)
- * [Clean up glib_wrapper! macro and IsA<_>, Wrapper traits and their impls](https://github.com/gtk-rs/glib/pull/421)
- * [GString: Avoid copy for From<GString> for String impl](https://github.com/gtk-rs/glib/pull/423)
+ * [Clean up glib_wrapper! macro and IsA&lt;_&gt;, Wrapper traits and their impls](https://github.com/gtk-rs/glib/pull/421)
+ * [GString: Avoid copy for From&lt;GString&gt; for String impl](https://github.com/gtk-rs/glib/pull/423)
  * [BoolError: allow owning the message](https://github.com/gtk-rs/glib/pull/419)
  * [Implement ToGlib for InitializingType](https://github.com/gtk-rs/glib/pull/418)
  * [Ci tests](https://github.com/gtk-rs/glib/pull/417)
  * [Add API for implementing GObject interfaces generically](https://github.com/gtk-rs/glib/pull/415)
  * [Make ObjectType::new() optional too](https://github.com/gtk-rs/glib/pull/416)
  * [Fixes compilation on aarch64](https://github.com/gtk-rs/glib/pull/413)
  * [Don't duplicate property name in subclass::Property type](https://github.com/gtk-rs/glib/pull/412)
- * [gstring: Specify a lifetime for the From<str> impl](https://github.com/gtk-rs/glib/pull/411)
+ * [gstring: Specify a lifetime for the From&lt;str&gt; impl](https://github.com/gtk-rs/glib/pull/411)
  * [Introduce GString](https://github.com/gtk-rs/glib/pull/389)
  * [Implement Value traits manually](https://github.com/gtk-rs/glib/pull/410)
  * [return correct type for Variant::get_type()](https://github.com/gtk-rs/glib/pull/409)
@@ -375,7 +375,7 @@ All this was possible thanks to the [gtk-rs/gir](https://github.com/gtk-rs/gir)
  * [Remove useless files](https://github.com/gtk-rs/gir/pull/660)
  * [Correctly cast pointers in property getters/setters if no trait is to…](https://github.com/gtk-rs/gir/pull/692)
  * [Fix unused bounds in futures](https://github.com/gtk-rs/gir/pull/691)
- * [Update code generation for glib_wrapper! macro and IsA<_>, etc cleanup](https://github.com/gtk-rs/gir/pull/689)
+ * [Update code generation for glib_wrapper! macro and IsA&lt;_&gt;, etc cleanup](https://github.com/gtk-rs/gir/pull/689)
  * [Codegen: use new glib macro for BoolError](https://github.com/gtk-rs/gir/pull/687)
  * [Mark autogenerated files as such](https://github.com/gtk-rs/gir/pull/679)
  * [Fix some clippy warnings](https://github.com/gtk-rs/gir/pull/680)
@@ -385,7 +385,7 @@ All this was possible thanks to the [gtk-rs/gir](https://github.com/gtk-rs/gir)
  * [Generate code using CStringHolder instead of String](https://github.com/gtk-rs/gir/pull/666)
  * [Add missing "glib" use statement for property setters](https://github.com/gtk-rs/gir/pull/674)
  * [Various minor fixes](https://github.com/gtk-rs/gir/pull/673)
- * [WIP: Don't generate any but the main IsA<_> bound for extension traits](https://github.com/gtk-rs/gir/pull/672)
+ * [WIP: Don't generate any but the main IsA&lt;_&gt; bound for extension traits](https://github.com/gtk-rs/gir/pull/672)
  * [Remove now unneeded use statements for the glib_wrapper! macro](https://github.com/gtk-rs/gir/pull/671)
  * [Implement basics for subclassing](https://github.com/gtk-rs/gir/pull/669)
  * [Default generate_display_trait](https://github.com/gtk-rs/gir/pull/668)