Fix links in Upgradeability Library docs (#304)

## Type of change

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- Bug fix

## Changes

The following changes have been made:

- Fixes links to the SRC-14 documentation

## Related Issues

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No spaces between hash and number-->

Closes #303 

## 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).
- [x] 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

@@ -24,6 +24,7 @@ Description of the upcoming release here.
 - [#297](https://github.com/FuelLabs/sway-libs/pull/297) Fixes docs anchor in basic SRC-7 example.
 - [#298](https://github.com/FuelLabs/sway-libs/pull/298) Fixes the README headers on Upgradability Libraries from an `h2` to an `h4`.
 - [#302](https://github.com/FuelLabs/sway-libs/pull/302) Fixes typos in documentation.
+- [#303](https://github.com/FuelLabs/sway-libs/pull/304) Fixes links in the Upgradability Library documenation.
 
 #### Breaking
 

docs/book/src/upgradability/index.md

@@ -1,22 +1,22 @@
 # Upgradability Library
 
-The Upgradability Library provides functions that can be used to implement contract upgrades via simple upgradable proxies. The Upgradability Library implements the required and optional functionality from [SRC-14](https://docs.fuel.network/docs/sway-standards/src-14-simple-upgradable-proxies/) as well as additional functionality for ownership of the proxy contract.
+The Upgradability Library provides functions that can be used to implement contract upgrades via simple upgradable proxies. The Upgradability Library implements the required and optional functionality from [SRC-14](https://docs.fuel.network/docs/sway-standards/src-14-simple-upgradeable-proxies/) as well as additional functionality for ownership of the proxy contract.
 
 For implementation details on the Upgradability Library please see the [Sway Libs Docs](https://fuellabs.github.io/sway-libs/master/sway_libs/upgradability/index.html).
 
 ## Importing the Upgradability Library
 
 In order to use the Upgradability library, Sway Libs and [Sway Standards](https://docs.fuel.network/docs/sway-standards/) must be added to the `Forc.toml` file and then imported into your Sway project. To add Sway Libs as a dependency to the `Forc.toml` file in your project please see the [Getting Started](../getting_started/index.md). To add Sway Standards as a dependency please see the [Sway Standards Book](https://docs.fuel.network/docs/sway-standards/#using-a-standard).
 
-To import the Upgradability Library and [SRC-14](https://docs.fuel.network/docs/sway-standards/src-14-simple-upgradable-proxies/) Standard to your Sway Smart Contract, add the following to your Sway file:
+To import the Upgradability Library and [SRC-14](https://docs.fuel.network/docs/sway-standards/src-14-simple-upgradeable-proxies/) Standard to your Sway Smart Contract, add the following to your Sway file:
 
 ```sway
 {{#include ../../../../examples/upgradability/src/main.sw:import}}
 ```
 
 ## Integrating the Upgradability Library into the SRC-14 Standard
 
-To implement the [SRC-14](https://docs.fuel.network/docs/sway-standards/src-14-simple-upgradable-proxies/) standard with the Upgradability library, be sure to add the Sway Standards dependency to your contract. The following demonstrates the integration of the Ownership library with the SRC-14 standard.
+To implement the [SRC-14](https://docs.fuel.network/docs/sway-standards/src-14-simple-upgradeable-proxies/) standard with the Upgradability library, be sure to add the Sway Standards dependency to your contract. The following demonstrates the integration of the Ownership library with the SRC-14 standard.
 
 ```sway
 {{#include ../../../../examples/upgradability/src/main.sw:integrate_with_src14}}