gnu: emacs-hercules: Update to 0.2.1.

* gnu/packages/emacs-xyz.scm (emacs-hercules): Update to 0.2.1.

gnu/packages/emacs-xyz.scm

@@ -9325,20 +9325,19 @@ settings).")
     (license license:gpl3+)))
 
 (define-public emacs-hercules
-  (let ((commit "3345904a0dab4c7a4d4478f0766f1d9f5d1bb501")
-        (revision "1"))
   (package
     (name "emacs-hercules")
-      (version (git-version "0.2" revision commit))
+    (version "0.2.1")
     (source
      (origin
        (method git-fetch)
        (uri (git-reference
              (url "https://gitlab.com/jjzmajic/hercules.el.git")
-               (commit commit)))
+             (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
-          (base32 "0cpq8h6l47nqhzch6snax5yrhxl8p4wn35q13ci35lj3iq8kmlk8"))))
+        (base32
+         "19939pf5d6p2facmfhpyghx0vipb5k6ry3bmkmjfkj1zp132zfqf"))))
     (build-system emacs-build-system)
     (propagated-inputs
      `(("emacs-which-key" ,emacs-which-key)))
@@ -9348,7 +9347,7 @@ settings).")
      "This package provides sticky-key-like functionality to obviate the
 need for repeated prefix-key sequences, and can reuse existing keymaps. The
 list of commands is displayed in a handy popup.")
-      (license license:gpl3+))))
+    (license license:gpl3+)))
 
 (define-public emacs-ws-butler
   (package