fix language and pin linter versions

CONTRIBUTING.md

@@ -23,7 +23,7 @@ Some pull request guidelines:
 ## Development Environment
 Instructions for installing a development version of Slither can be found in our [wiki](https://github.com/crytic/slither/wiki/Developer-installation).
 
-To run the unit tests, you need clone this repo and run `pip install ".[dev]"`.
+To run the unit tests, you need clone this repository and run `pip install ".[dev]"`.
 
 ### Linters
 

setup.py

@@ -19,8 +19,8 @@ setup(
     ],
     extras_require={
         "dev": [
-            "black>=22.3.0",
-            "pylint>=2.13.4",
+            "black==22.3.0",
+            "pylint==2.13.4",
             "pytest==7.0.1",
             "pytest-cov",
             "deepdiff",