Review 'Concept topic' page

[jdbaldry]

• Fix index file name
• Use italics for emphasis in example title
• Remove company name possessive
• Update linked page text to match title

Rest LGTM

Closes #695

[github-actions]

Readability report

File	AutomatedReadability	ColemanLiau	FleschKincaid	FleschReadingEase	GunningFog	LIX	SMOG
docs/sources/structure/topic-types/concept/index.md	$${7.26\space\color{red}(Δ+0.13)}$$	$${11.15\space\color{red}(Δ+0.12)}$$	$${7.85\space\color{red}(Δ+0.05)}$$	$${54.57\space\color{red}(Δ-0.03)}$$	$${8.58\space\color{red}(Δ+0.11)}$$	$${41.12\space\color{red}(Δ+0.72)}$$	$${9.89\space\color{red}(Δ+0.03)}$$

View metric targets

Metric	Range	Ideal score
AutomatedReadability	6 (very easy read) to 14 (extremely difficult read)	8 or less
ColemanLiau	6 (very easy read) to 17 (extremely difficult read)	9 or less
FleschKincaid	6 (very easy read) to 17 (extremely difficult read)	8 or less
FleschReadingEase	100 (very easy read) to 0 (extremely difficult read)	70 or more
GunningFog	6 (very easy read) to 17 (extremely difficult read)	10 or less
LIX	20 (very easy read) to 60+ (extremely difficult read)	35 or less
SMOG	6 (very easy read) to 17 (extremely difficult read)	10 or less

[josmperez]

LGTM.