Fix in-page anchor link in README.md.

Author: danielparks

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 ## main branch
 
+### Bug fixes
+
+* Fix in-page anchor link in [README.md][].
+
+[README.md]: README.md
+
 ## Release 1.2.1
 
 ### Improvements

release.rb

@@ -128,7 +128,7 @@ def fix_links(root, path)
       name = match[1]
       uri = URI(match[2])
 
-      unless uri.absolute? || !uri.host.nil?
+      unless uri.absolute? || !uri.host.nil? || uri.path.empty?
         uri = root + uri
       end