Tones down the emojis

index.md

@@ -10,7 +10,7 @@ These resources are all openly licensed, so please feel free to reuse them.
 We'd love to hear from you if you do.
 
 We are also always open for contributions and ideas for improvements.
-We would particularly appreciate contributions to the resources marked with :sparkles:!
+We would particularly appreciate contributions to the resources marked with :hammer_and_wrench:.
 
 Note this page does not include:
 
@@ -36,7 +36,7 @@ This is a living document, and [we welcome your feedback](http://standard.public
 
 To let the community of users of Standard for Public Code share their implementation choices for the criteria to guide other users, we created a resource where tips, examples and tools can be added.
 
-:sparkles: Contribution requested - [help us](https://github.com/publiccodenet/community-implementation-guide-standard#readme) add examples and further reading :sparkles:
+:hammer_and_wrench: Contribution requested - [help us](https://github.com/publiccodenet/community-implementation-guide-standard#readme) add examples and further reading.
 
 #### [Introduction course](https://citybycity.academy/course/standards-for-smart-cities)
 
@@ -48,7 +48,7 @@ It's a self study course and offers a certification of completion to those who f
 To increase the accessibility of the Standard for Public Code, the [translations repository](https://github.com/publiccodenet/community-translations-standard) allows for the community to collaborate on translations of it.
 It is possible to add more translations as more communities find it useful and are willing to translate and review.
 
-:sparkles: Contribution requested - [help us](https://github.com/publiccodenet/community-translations-standard#readme) add new and improve existing translations :sparkles:
+:hammer_and_wrench: Contribution requested - [help us](https://github.com/publiccodenet/community-translations-standard#readme) add new and improve existing translations.
 
 ### [Software procurement process code](https://processcode.publiccode.net/)