Refs #9570 Changed fixed width formatting

LoadLog now has a usage example

Most text which needs to be fixed width is now in code blocks. Those remaining using the double backtick (``) style are supposed to be like that as they're supposed to be inline
Refs #9570 SaveAsciiv2 now has usage examples

SaveAsciiv2 has three usage examples. The algorithm file itself got an edit to make a property description better.

Various formatting tidy-up