Fixe docs anchor for basic SRC-7 example (#297)

## Type of change

<!--Delete points that do not apply-->

- Bug fix
- Documentation

## Changes

The following changes have been made:

- Fixes docs anchor for basic SRC-7 example

## Checklist

- [ ] I have linked to any relevant issues.
- [ ] I have commented my code, particularly in hard-to-understand
areas.
- [ ] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [ ] If my change requires substantial documentation changes, I have
[requested support from the DevRel
team](https://github.com/FuelLabs/devrel-requests/issues/new/choose)
- [ ] I have added tests that prove my fix is effective or that my
feature works.
- [ ] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [ ] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [ ] I have requested a review from the relevant team or maintainers.
- [ ] I have updated the changelog to reflect the changes on this PR.

---------

Co-authored-by: bitzoic <[email protected]>

CHANGELOG.md

@@ -21,8 +21,7 @@ Description of the upcoming release here.
 
 ### Fixed
 
-- Some fix here 1
-- Some fix here 2
+- [#297](https://github.com/FuelLabs/sway-libs/pull/297) Fixes docs anchor in basic SRC-7 example.
 
 #### Breaking
 

docs/book/src/asset/metadata.md

@@ -51,5 +51,5 @@ The `_set_metadata()` function follows the SRC-7 standard for logging and will e
 To use the `StorageMetadata` type, simply get the stored metadata with the associated `key` and `AssetId` using the provided `_metadata()` convenience function. The example below shows the implementation of the [SRC-7](https://docs.fuel.network/docs/sway-standards/src-7-asset-metadata/) standard in combination with the Asset Library's `StorageMetadata` type and the `_metadata()` function with no user defined restrictions or custom functionality.
 
 ```sway
-{{#include ../../../../examples/asset/basic_src7/src/main.sw:src7_metadata_convenience_function}}
+{{#include ../../../../examples/asset/basic_src7/src/main.sw:basic_src7}}
 ```