Backlog of typos, non-content formatting issue

[scottkurz]

• 8.7.1 has a line in strikethrough: Step exit status is initially set to the same value as batch status. Later in same section: (see9.6) (jammed together)
• JobOperator link 10.9.6 s/b 10.9.7
• capture change log in doc.
• onReadErrror, onProcessErrror]
• (see9.6)
• TYPO: * Get time execution was last updated updated.
• CheckpointAlgorithm – formatting of checkpointTimeout is black, not blue

[scottkurz]

Sec. 12
mlns:jbatch="http://xmlns.jcp.org/xml/ns/javaee" version="1.0">

[scottae22]

The introductory section that explains the purpose of a document is a "fore word", not a "forward"
This particular typo was addressed when the clickable links were updated.