[docs] tidy release notes (#2055)

Author: odow

.gitignore

@@ -8,3 +8,4 @@ docs/site/
 test/Benchmarks/*.json
 Manifest.toml
 *.swp
+docs/src/release_notes.md

docs/make.jl

@@ -86,6 +86,35 @@ const _PAGES = [
     "Release notes" => "release_notes.md",
 ]
 
+# ==============================================================================
+#  Modify the release notes
+# ==============================================================================
+
+function fix_release_line(
+    line::String,
+    url::String = "https://github.com/jump-dev/MathOptInterface.jl"
+)
+    # (#XXXX) -> ([#XXXX](url/issue/XXXX))
+    while (m = match(r"\(\#([0-9]+)\)", line)) !== nothing
+       id = m.captures[1]
+       line = replace(line, m.match => "([#$id]($url/issues/$id))")
+    end
+    # ## vX.Y.Z -> [vX.Y.Z](url/releases/tag/vX.Y.Z)
+    while (m = match(r"\#\# (v[0-9]+.[0-9]+.[0-9]+)", line)) !== nothing
+        tag = m.captures[1]
+        line = replace(line, m.match => "## [$tag]($url/releases/tag/$tag)")
+    end
+    return line
+end
+
+open(joinpath(@__DIR__, "src", "changelog.md"), "r") do in_io
+    open(joinpath(@__DIR__, "src", "release_notes.md"), "w") do out_io
+        for line in readlines(in_io; keep = true)
+            write(out_io, fix_release_line(line))
+        end
+    end
+end
+
 # ==============================================================================
 #  Build the HTML docs
 # ==============================================================================