mdBook: update to 0.0.26.

Closes #9619.

Signed-off-by: Enno Boland <gottox@voidlinux.eu>

srcpkgs/mdBook/template

@@ -1,6 +1,6 @@
 # Template file for 'mdBook'
 pkgname=mdBook
-version=0.0.21
+version=0.0.26
 revision=1
 hostmakedepends="cargo"
 short_desc="Create book from markdown files. Like Gitbook but implemented in Rust"
@@ -8,7 +8,7 @@ maintainer="Huidong Hwang <hwangh95@gmail.com>"
 license="MPL-2.0"
 homepage="https://github.com/rust-lang-nursery/${pkgname}"
 distfiles="https://github.com/rust-lang-nursery/${pkgname}/archive/${version}.tar.gz"
-checksum=bffb39106ab9f546c7a02667aa3616c06f05dfb566ef4830f51fd244c7986239
+checksum=99d6572c371e01751f37cc7e23c7dbf626045aee3c8e4953b1333d1779533022
 nocross="This cannot be cross compiled due to limitations in cargo."
 
 do_build() {