Fix some issues reported by lintian

Fix some issues reported by lintian

• Fix field name case in debian/copyright (Upstream-name ⇒ Upstream-Name).
• Fix field name case in debian/copyright (Upstream-contact ⇒ Upstream-Contact).

Debdiff

These changes affect the binary packages:

File lists identical (after any substitutions)

Control files of package erlang-erlware-commons: lines which differ (wdiff format)

• Depends: erlang-base (>= 1:25.2.1+dfsg), 1:25.2.3+dfsg), erlang-crypto (>= 1:25.2.1+dfsg), 1:25.2.3+dfsg), erlang-syntax-tools (>= 1:25.2.1+dfsg) 1:25.2.3+dfsg)

No differences were encountered between the control files of package **erlang-erlware-commons-dev**

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