Fix typo "Github" in Localizable.strings (#3285)

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## Summary
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As GitHub is a brand name, the camel-case "H" should be kept.

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Documentation: home-assistant/companion.home-assistant#

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Noticed this in Lokalise as a translator added a respective comment.

Sources/App/Resources/en.lproj/Localizable.strings

@@ -184,7 +184,7 @@
 "component.collapsible_view.expand" = "Expand";
 "connection.error.details.button.discord" = "Ask in Discord";
 "connection.error.details.button.doc" = "Read documentation";
-"connection.error.details.button.github" = "Report issue in Github";
+"connection.error.details.button.github" = "Report issue in GitHub";
 "connection.error.details.label.code" = "Code";
 "connection.error.details.label.description" = "Description";
 "connection.error.details.label.domain" = "Domain";
@@ -1102,4 +1102,4 @@ Home Assistant is free and open source home automation software with a focus on
 "widgets.sensors.description" = "Display state of sensors";
 "widgets.sensors.not_configured" = "No Sensors Configured";
 "widgets.sensors.title" = "Sensors";
-"yes_label" = "Yes";
+"yes_label" = "Yes";