Update SRC-7 naming (#306)

## Type of change

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

- Improvement (refactoring, restructuring repository, cleaning tech
debt, ...)
- Documentation

## Changes

The following changes have been made:

- Updates the SRC-7 naming to "Onchain Asset Metadata Standard"
- Adds comments on the SRC-7 intent for stateful metadata

## Checklist

- [x] I have linked to any relevant issues.
- [x] I have commented my code, particularly in hard-to-understand
areas.
- [x] 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)
- [x] I have added tests that prove my fix is effective or that my
feature works.
- [x] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [x] 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).
- [x] I have requested a review from the relevant team or maintainers.
- [x] I have updated the changelog to reflect the changes on this PR.

---------

Co-authored-by: K1-R1 <[email protected]>

CHANGELOG.md

@@ -17,6 +17,7 @@ Description of the upcoming release here.
 ### Changed
 
 - [#305](https://github.com/FuelLabs/sway-libs/pull/305) Updates to forc `v0.66.2`, fuel-core `v0.40.0`, and fuels-rs `v0.66.9`.
+- [#306](https://github.com/FuelLabs/sway-libs/pull/306) Updates the SRC-7 naming to Onchain Native Asset Metadata Standard.
 
 ### Fixed
 

docs/book/spell-check-custom-words.txt

@@ -209,4 +209,5 @@ StorageMetadata
 functionly
 verifiably
 upgradable
-upgradability
+upgradability
+Onchain

docs/book/src/asset/index.md

@@ -14,4 +14,4 @@ The [SRC-3; Mint and Burn Standard](https://docs.fuel.network/docs/sway-standard
 
 ## [SRC-7 Functionality](./metadata.md)
 
-The [SRC-7; Arbitrary Asset Metadata Standard](https://docs.fuel.network/docs/sway-standards/src-7-asset-metadata/) prescribes an ABI for metadata associated with Native Assets on the Fuel Network. The Asset Library's [metadata](./metadata.md) section supports the [SRC-7](https://docs.fuel.network/docs/sway-standards/src-7-asset-metadata/)'s implementation.
+The [SRC-7; Onchain Asset Metadata Standard](https://docs.fuel.network/docs/sway-standards/src-7-asset-metadata/) prescribes an ABI for stateful metadata associated with Native Assets on the Fuel Network. The Asset Library's [metadata](./metadata.md) section supports the [SRC-7](https://docs.fuel.network/docs/sway-standards/src-7-asset-metadata/)'s implementation.

docs/book/src/asset/metadata.md

@@ -14,7 +14,7 @@ To import the Asset Library Base Functionality and [SRC-7](https://docs.fuel.net
 
 ## Integration with the SRC-7 Standard
 
-The [SRC-7](https://docs.fuel.network/docs/sway-standards/src-7-asset-metadata/) definition states that the following abi implementation is required for any Native Asset on Fuel:
+The [SRC-7](https://docs.fuel.network/docs/sway-standards/src-7-asset-metadata/) definition states that the following abi implementation is required for any Native Asset on Fuel which uses stateful metadata:
 
 ```sway
 {{#include ../../../../examples/asset/metadata_docs/src/main.sw:src7_abi}}