Corrected spacing issues that were messing up code blocks.
Merge pull request #304 from deb-cfengine/knownIssues

Corrected spacing issues that were messing up code blocks.
Removed reference to DiffLexer and just created normal code blocks on Known Issues page
Removed reference to DiffLexer and just created normal code blocks on Known Issues page.
Merge pull request #305 from deb-cfengine/knownIssues_fix

Removed reference to DiffLexer and just created normal code blocks on Known Issues page
Grammatical edits to Known Issues page
Merge pull request #306 from deb-cfengine/knownIssues2

Grammatical edits to Known Issues page