Bump github.com/cpuguy83/go-md2man/v2 from 2.0.3 to 2.0.4

Bumps [github.com/cpuguy83/go-md2man/v2](https://github.com/cpuguy83/go-md2man) from 2.0.3 to 2.0.4.
- [Release notes](https://github.com/cpuguy83/go-md2man/releases)
- [Commits](cpuguy83/go-md2man@v2.0.3...v2.0.4)

---
updated-dependencies:
- dependency-name: github.com/cpuguy83/go-md2man/v2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/zulucmd/zulu/v2
 go 1.16
 
 require (
-	github.com/cpuguy83/go-md2man/v2 v2.0.3
+	github.com/cpuguy83/go-md2man/v2 v2.0.4
 	github.com/inconshreveable/mousetrap v1.1.0
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/zulucmd/zflag/v2 v2.0.0

go.sum

@@ -1,5 +1,5 @@
-github.com/cpuguy83/go-md2man/v2 v2.0.3 h1:qMCsGGgs+MAzDFyp9LpAe1Lqy/fY/qCovCm0qnXZOBM=
-github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/cpuguy83/go-md2man/v2 v2.0.4 h1:wfIWP927BUkWJb2NmU/kNDYIBTh/ziUX91+lVfRxZq4=
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=