docs: updates references to the benchmark repo (#285)

* docs: update github url in lockup gas benchmark

docs: update github url in lockup gas benchmark

* docs: update github url in flow gas benchmark

* docs: update github url in concepts lockup stream-shapes

* docs: revert change

---------

Co-authored-by: smol-ninja <[email protected]>

Author: Patrick-Ehimen

docs/guides/flow/04-gas-benchmarks.md

@@ -10,8 +10,8 @@ mainnet - you shouldn't take them for granted. The gas usage may vary depending
 
 :::note
 
-Please refer to the [GitHub repository](https://github.com/sablier-labs/flow/tree/release/benchmark) to view the code
-that generates these benchmarks.
+Please refer to the [GitHub repository](https://github.com/sablier-labs/benchmarks) to view the code that generates
+these benchmarks.
 
 :::
 

docs/guides/lockup/04-gas-benchmarks.md

@@ -10,8 +10,8 @@ mainnet - you shouldn't take them for granted. The gas usage may vary depending
 
 :::note
 
-Please refer to the [GitHub repository](https://github.com/sablier-labs/lockup/tree/release/benchmark) to view the code
-that generates these benchmarks.
+Please refer to the [GitHub repository](https://github.com/sablier-labs/benchmarks) to view the code that generates
+these benchmarks.
 
 :::