* Remove 'things' in favor of more specific terms
Explicitly spelling out that these are bits of configuration is more
explicit.
* Add clarification on namespace and host network limitations
This adds clarifications on the limitations on sidecar injection for
particular namespaces and for pods with host networking.
The clarifications are in two spots because without either of them, the
information provided is incomplete. Saying that whether the sidecar is
injected or not is only dependant on three bits of config isn't really
accurate. And including the troubleshooting steps without mentioning
these hard limits isn't accurate either.
* Remove whitespace and fix spelling error
* Remove misplaced 'is'
* Fix typo
* Replace 'limitation' language with 'security rules'
This emphasises that these restrictions are by design, and are intended
to provide security to users.
* Clarify the outcome of annotating pods that violate security rules
This clarifies that if pods on the host network or in system namespaces
will be ignored by the sidecar injector, as opposed to other failures or
errors.
* Update lists to use correct Hugo format
* Indent paragraph to fix formatting and numbering
This indentation should fix the formatting of this paragraph so that it
appears correctly under the second element of the ordered list. It
should also ensure that the ordered list continues at 3 with the next
item.
* Add whitespace to ensure correct formatting of lists