Update SHFB

[304NotModified]

Update SHFB tool, config and some XML docs

create API docs by running src/Doc/BuildDoc.cmd

[codecov-io]

Current coverage is 75.14%

Merging #1329 into master will decrease coverage by -0.01% as of c7f6d2d

@@            master   #1329   diff @@
======================================
  Files          267     267       
  Stmts        15519   15519       
  Branches      1631    1631       
  Methods          0       0       
======================================
- Hit          11663   11662     -1
- Partial        383     384     +1
  Missed        3473    3473       

Review entire Coverage Diff as of c7f6d2d

---

Uncovered Suggestions

1. +0.09% via ...gingConfiguration.cs#374...387
2. +0.09% via ...gingConfiguration.cs#340...353
3. +0.09% via ...argets/FileTarget.cs#1713...1725
4. See 7 more...

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