Simplify wording in README.md checklist

The wording in the README.md file's checklist has been simplified for clarity. The changes are particularly focused on the sections about batch processing, release workflow, and performance optimization. The new wording makes it easier to understand each item on the checklist, improving the documentation for developers and users.

README.md

@@ -466,9 +466,9 @@ It's random ideas and plans. No orderings and deadlines. <u>But batch processing
 Batch processing
 * [x] CSV/Schema file discovery in the folder with regex filename pattern (like `glob(./**/dir/*.csv)`).
 * [x] If option `--csv` is a folder, then validate all files in the folder.
-* [x] Batch processing. Checking multiple CSV files in one schema.
-* [ ] Batch processing. Quick stop flag. If the first error is found, then stop the validation process to save time.
-* [ ] Batch processing. Using multiple schemas for one csv file.
+* [x] Checking multiple CSV files in one schema.
+* [ ] Quick stop flag. If the first error is found, then stop the validation process to save time.
+* [ ] Using multiple schemas for one csv file.
 * [ ] If option `--csv` is not specified, then the STDIN is used. To build a pipeline in Unix-like systems.
 
 Validation
@@ -481,14 +481,14 @@ Validation
 * [ ] Input encoding detection + `BOM` (right now it's experimental). It works but not so accurate... UTF-8/16/32 is the best choice for now.
 
 Release workflow
-* [ ] Release Docker. Build and release Docker image [via GitHub Actions, tags and labels](https://docs.docker.com/build/ci/github-actions/manage-tags-labels/).
-* [ ] Release Docker. Upgrading to PHP 8.3.x
-* [ ] Release Phar. Build phar file and release via GitHub Actions.
+* [ ] Build and release Docker image [via GitHub Actions, tags and labels](https://docs.docker.com/build/ci/github-actions/manage-tags-labels/).
+* [ ] Upgrading to PHP 8.3.x
+* [ ] Build phar file and release via GitHub Actions.
 
 Performance and optimization
-* [ ] Parallel. Validation of really-really large files (1GB+ ?). I know you have them and not so much memory.
-* [ ] Parallel. Validation of multiple files at once.
-* [ ] Benchmarks as part of the CI process and Readme. It's important to know how much time the validation process takes.
+* [ ] Parallel validation of really-really large files (1GB+ ?). I know you have them and not so much memory.
+* [ ] Parallel validation of multiple files at once.
+* [ ] Benchmarks as part of the CI(?) and Readme. It's important to know how much time the validation process takes.
 * [ ] Optimazation on `php.ini` level to start it faster. JIT.
 
 Mock data generation
@@ -505,7 +505,7 @@ Misc
 * [ ] More examples and documentation.
 
 
-  PS. [There is a file](tests/schemas/example_full.yml) with my ideas and imagination.
+PS. [There is a file](tests/schemas/example_full.yml) with my ideas and imagination.
 I'm not sure if I will implement all of them. But I will try to do my best.