Minor markdown spelling fixes

Author: mikemaccana

CONTRIBUTING.md

@@ -22,13 +22,13 @@ Specifically for code in this repo:
 
 1. Use pnpm as the default package manager for the project. You can [install pnpm by following the instructions](https://pnpm.io/installation). Commit `pnpm-lock.yaml` to the repository.
 
-2. Anchor programs should be in directory `anchor`, programs written for Solana Native should be in directory `native`, TypeScript in `posidon` and Python in `seahorse.
+2. Anchor programs should be in directory `anchor`, programs written for Solana Native should be in directory `native`, TypeScript in `posidon` and Python in `seahorse`.
 
 3. Tests for Solana native, Steel and Anchor programs should be written with [ts-mocha](https://github.com/piotrwitek/ts-mocha).
 
-4. Tests for solana native programs and steel framework programs should be written with [solana-bankrun](https://kevinheavey.github.io/solana-bankrun)
+4. Tests for Solana native programs and steel framework programs should be written with [solana-bankrun](https://kevinheavey.github.io/solana-bankrun)
 
-5. For Solana native programs and Steel framework programs ensure adding these mandatory pnpm run scripts to your `package.json`. file for successful ci/cd builds:
+5. For Solana native programs and Steel framework programs ensure adding these mandatory pnpm run scripts to your `package.json` file for successful CI/CD builds:
 
 ```json
 "scripts": {
@@ -39,7 +39,7 @@ Specifically for code in this repo:
 },
 ```
 
-6. Test command for anchor should execute `pnpm test` instead of `yarn run test` for anchor programs. Replace `yarn` with `pnpm` in `[script]` table inside [Anchor.toml file.](https://www.anchor-lang.com/docs/manifest#scripts-required-for-testing)
+6. Test command for Anchor should execute `pnpm test` instead of `yarn run test` for anchor programs. Replace `yarn` with `pnpm` in `[script]` table inside [Anchor.toml file.](https://www.anchor-lang.com/docs/manifest#scripts-required-for-testing)
 
 7. TypeScript, JavaScript and JSON files are formatted and linted using
    [Biome](https://biomejs.dev/). Execute the following command to format and lint your code at the root of this project before submitting a pull request: