Map el to el-GR for Play Store metadata.

briar-android/.tx/config

@@ -9,7 +9,7 @@ source_lang  = en
 type         = TXT
 minimum_perc = 100
 # https://support.google.com/googleplay/android-developer/answer/9844778?hl=en#zippy=%2Cview-list-of-available-languages
-lang_map     = de: de-DE, is: is-IS, ja: ja-JP, tr: tr-TR, zh-Hans: zh-CN, ru: ru-RU, sv: sv-SE, hu: hu-HU, it: it-IT, my: my-MM, en: en-US, es: es-ES, fr: fr-FR, gl: gl-ES, pl: pl-PL
+lang_map     = de: de-DE, is: is-IS, ja: ja-JP, tr: tr-TR, zh-Hans: zh-CN, ru: ru-RU, sv: sv-SE, hu: hu-HU, it: it-IT, my: my-MM, en: en-US, es: es-ES, fr: fr-FR, gl: gl-ES, pl: pl-PL, el: el-GR
 
 [o:otf:p:briar:r:google-play-short-description]
 file_filter  = fastlane/metadata/android/<lang>/short_description.txt
@@ -17,7 +17,7 @@ source_file  = fastlane/metadata/android/en-US/short_description.txt
 source_lang  = en
 type         = TXT
 minimum_perc = 100
-lang_map     = en: en-US, es: es-ES, is: is-IS, tr: tr-TR, gl: gl-ES, it: it-IT, my: my-MM, sv: sv-SE, zh-Hans: zh-CN, de: de-DE, ja: ja-JP, ru: ru-RU, fr: fr-FR, hu: hu-HU, pl: pl-PL
+lang_map     = en: en-US, es: es-ES, is: is-IS, tr: tr-TR, gl: gl-ES, it: it-IT, my: my-MM, sv: sv-SE, zh-Hans: zh-CN, de: de-DE, ja: ja-JP, ru: ru-RU, fr: fr-FR, hu: hu-HU, pl: pl-PL, el: el-GR
 
 [o:otf:p:briar:r:stringsxml-5]
 file_filter  = src/main/res/values-<lang>/strings.xml