docs: fix currency symbol formatting

Author: angristan

README.md

@@ -90,7 +90,7 @@ To be noted:
 ### Recommended providers
 
 - [Vultr](https://www.vultr.com/?ref=8948982-8H): Worldwide locations, IPv6 support, starting at \$2.5/month
-- [Hetzner](https://hetzner.cloud/?ref=ywtlvZsjgeDq): Worldwide locations, IPv6, 20 TB of traffic, starting at \€3.59/month
+- [Hetzner](https://hetzner.cloud/?ref=ywtlvZsjgeDq): Worldwide locations, IPv6, 20 TB of traffic, starting at €3.59/month
 - [Digital Ocean](https://m.do.co/c/ed0ba143fe53): Worldwide locations, IPv6 support, starting at \$4/month
 
 ## Usage
@@ -377,7 +377,7 @@ More Q&A in [FAQ.md](FAQ.md).
 **A:** I recommend these:
 
 - [Vultr](https://www.vultr.com/?ref=8948982-8H): Worldwide locations, IPv6 support, starting at \$2.5/month
-- [Hetzner](https://hetzner.cloud/?ref=ywtlvZsjgeDq): Worldwide locations, IPv6, 20 TB of traffic, starting at \€3.59/month
+- [Hetzner](https://hetzner.cloud/?ref=ywtlvZsjgeDq): Worldwide locations, IPv6, 20 TB of traffic, starting at €3.59/month
 - [Digital Ocean](https://m.do.co/c/ed0ba143fe53): Worldwide locations, IPv6 support, starting at \$4/month
 
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