fix styling of opencollective image in release notes

Author: Techatrix

content/zls/releases/0.10.0.smd

@@ -221,7 +221,11 @@
 We'd like to take a second to thank all our awesome [contributors](https://github.com/zigtools/zls/graphs/contributors) and donators/backers/sponsors; if you have time or money to spare, consider partaking in either of these options - they help keep ZLS awesome for everyone!
 
 ```=html
-<a href="https://opencollective.com/zigtools#category-CONTRIBUTE"><img src="https://opencollective.com/zigtools/backers.svg?width=890&limit=1000" alt="OpenCollective Backers"></a>
+<figure>
+    <a href="https://opencollective.com/zigtools#category-CONTRIBUTE">
+        <img src="https://opencollective.com/zigtools/backers.svg?width=890&limit=1000" alt="OpenCollective Backers">
+    </a>
+</figure>
 ```
 
 **Full Changelog**: [0.9.0...0.10.0](https://github.com/zigtools/zls/compare/0.9.0...0.10.0)

content/zls/releases/0.11.0.smd

@@ -61,7 +61,11 @@
 We'd like to take a second to thank all our awesome [contributors](https://github.com/zigtools/zls/graphs/contributors) and donators/backers/sponsors; if you have time or money to spare, consider partaking in either of these options - they help keep ZLS awesome for everyone!
 
 ```=html
-<a href="https://opencollective.com/zigtools#category-CONTRIBUTE"><img src="https://opencollective.com/zigtools/backers.svg?width=890&limit=1000" alt="OpenCollective Backers"></a>
+<figure>
+    <a href="https://opencollective.com/zigtools#category-CONTRIBUTE">
+        <img src="https://opencollective.com/zigtools/backers.svg?width=890&limit=1000" alt="OpenCollective Backers">
+    </a>
+</figure>
 ```
 
 **Full Changelog**: [0.10.0...0.11.0](https://github.com/zigtools/zls/compare/0.10.0...0.11.0)

content/zls/releases/0.12.0.smd

@@ -269,7 +269,11 @@ When encountering issues, do not hesitate to report your issues on the [Github i
 We'd like to take a second to thank all our awesome [contributors](https://github.com/zigtools/zls/graphs/contributors) and donators/backers/sponsors; if you have time or money to spare, consider partaking in either of these options - they help keep ZLS awesome for everyone!
 
 ```=html
-<a href="https://opencollective.com/zigtools#category-CONTRIBUTE"><img src="https://opencollective.com/zigtools/backers.svg?width=890&limit=1000" alt="OpenCollective Backers"></a>
+<figure>
+    <a href="https://opencollective.com/zigtools#category-CONTRIBUTE">
+        <img src="https://opencollective.com/zigtools/backers.svg?width=890&limit=1000" alt="OpenCollective Backers">
+    </a>
+</figure>
 ```
 
 **Full Changelog**: [0.11.0...0.12.0](https://github.com/zigtools/zls/compare/0.11.0...0.12.0)

content/zls/releases/0.13.0.smd

@@ -20,7 +20,11 @@ This release is meant to provide compatibility with Zig 0.13.0
 We'd like to take a second to thank all our awesome [contributors](https://github.com/zigtools/zls/graphs/contributors) and donators/backers/sponsors; if you have time or money to spare, consider partaking in either of these options - they help keep ZLS awesome for everyone!
 
 ```=html
-<a href="https://opencollective.com/zigtools#category-CONTRIBUTE"><img src="https://opencollective.com/zigtools/backers.svg?width=890&limit=1000" alt="OpenCollective Backers"></a>
+<figure>
+    <a href="https://opencollective.com/zigtools#category-CONTRIBUTE">
+        <img src="https://opencollective.com/zigtools/backers.svg?width=890&limit=1000" alt="OpenCollective Backers">
+    </a>
+</figure>
 ```
 
 **Full Changelog**: [0.12.0...0.13.0](https://github.com/zigtools/zls/compare/0.12.0...0.13.0)