Fix Javadoc errors and minor house-keeping

[david-russo]

No description provided.

[codecov]

Codecov Report

Merging #450 into integration will not change coverage.
The diff coverage is 0%.

@@              Coverage Diff              @@
##             integration    #450   +/-   ##
=============================================
  Coverage           49.7%   49.7%           
  Complexity           987     987           
=============================================
  Files                 55      55           
  Lines               7748    7748           
  Branches            1406    1406           
=============================================
  Hits                3851    3851           
  Misses              3433    3433           
  Partials             464     464

Impacted Files	Coverage Δ	Complexity Δ
...du/harvard/hul/ois/jhove/handler/AuditHandler.java	9.21% <ø> (ø)	2 <0> (ø)	⬇️
...ain/java/edu/harvard/hul/ois/jhove/ModuleBase.java	50.69% <ø> (ø)	70 <0> (ø)	⬇️
...c/main/java/edu/harvard/hul/ois/jhove/Message.java	88% <ø> (ø)	12 <0> (ø)	⬇️
...in/java/edu/harvard/hul/ois/jhove/InfoMessage.java	41.17% <ø> (ø)	4 <0> (ø)	⬇️
...a/edu/harvard/hul/ois/jhove/NisoImageMetadata.java	75.64% <ø> (ø)	182 <0> (ø)	⬇️
...n/java/edu/harvard/hul/ois/jhove/ErrorMessage.java	88.23% <ø> (ø)	8 <0> (ø)	⬇️
.../main/java/edu/harvard/hul/ois/jhove/MacStuff.java	0% <0%> (ø)	0 <0> (ø)	⬇️

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