Fix build errors v/4.0

[fantkolja]

1:46:08 AM: [22:46:08.375] WARN (asciidoctor): unterminated listing block
1:46:08 AM:     file: docs/modules/ROOT/pages/migration-guides.adoc:1375
1:46:08 AM:     source: https://github.com/hazelcast/imdg-docs (branch: v/4.0 | start path: docs)
1:46:08 AM: [22:46:08.377] WARN (asciidoctor): unterminated listing block
1:46:08 AM:     file: docs/modules/ROOT/pages/migration-guides.adoc:1393
1:46:08 AM:     source: https://github.com/hazelcast/imdg-docs (branch: v/4.0 | start path: docs)
1:46:08 AM: [22:46:08.377] ERROR (asciidoctor): dropping cells from incomplete row detected end of table
1:46:08 AM:     file: docs/modules/ROOT/pages/migration-guides.adoc:1393
1:46:08 AM:     source: https://github.com/hazelcast/imdg-docs (branch: v/4.0 | start path: docs)
1:46:08 AM: [22:46:08.538] WARN (asciidoctor): skipping reference to missing attribute: mc-docs
1:46:08 AM:     file: docs/modules/ROOT/pages/rolling-upgrades.adoc
1:46:08 AM:     source: https://github.com/hazelcast/imdg-docs (branch: v/4.0 | start path: docs)
1:46:11 AM: [22:46:11.184] WARN (asciidoctor): skipping reference to missing attribute: mc-docs
1:46:11 AM:     file: docs/modules/installation/pages/rolling-upgrades.adoc
1:46:11 AM:     source: https://github.com/hazelcast/imdg-docs (branch: v/4.0 | start path: docs)

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