Fix this problem:

Some tables in the raw upstream AsciiDoc source files imported into the downstream do not render correctly. 

Following review of imported security content on PV2 sandbox, the following issues were identified:

• Issue with inline table styling in Basic-authentication-concept. Warning message appears.

• Issue with inline table styling/sizing in Authentication mechanisms in Quarkus. Warning message appears. 
• Tables rendering okay in Authorization of web endpoints , but sizing should be adjusted. Also, table in  Authentication mechanisms in Quarkus.

Why? 

Downstream doc stylesheet differs to upstream so image width, % etc might need some enhancing to look OK downstream.

Scope of this PR

Ensure tables render in PV2 output and no Warning messages etc. appear.

Fix width, length % etc and other stylesheet rendering issues that occur in PV2 in asciidoc.

Useful links:

See screenshots and more info here: ** Spot check of content imported to PV2 sandbox Google doc