fix: help and errors name sharing.key and sharing.keyRules, not share.* (#64)

Co-authored-by: Karl-Einar Bergstrøm <karl-einarb@outlook.com>

internal/provider/fake/fake.go

@@ -332,7 +332,7 @@ func Azure(delay time.Duration) *Provider {
 	}, demoCert)
 
 	shared := p.addContainer(prod, "kv-shared-prod", "https://kv-shared-prod.vault.azure.net", allTypes...)
-	// A key to share env files with (S → f): random, as share.keyRules wants.
+	// A key to share env files with (S → f): random, as sharing.keyRules wants.
 	p.add(shared, provider.TypeSecret, provider.Object{
 		Name: "env-share", Enabled: &yes, Updated: base, Reference: secretRef("kv-shared-prod", "env-share"),
 	}, "q8Zt3VwL1mXc7Rk2Pj9Ys4Hn6Bf0Ga5Ud+Te/OiWlE=")