fix readme

fix line size
fix "" to ''

Author: KachanovYev

README.md

@@ -14,7 +14,7 @@ First, you install it (you must have
 and [Pip](https://pip.pypa.io/en/stable/installing/) installed):
 
 ```bash
-pip3 install aibolit==
+pip3 install aibolit
 ```
 
 To analyze your Java sources, located at `src/java` (for example), run:

test/config/test_config.py

@@ -17,15 +17,16 @@ def test_each_metric_in_config_accepts_ast():
         assert 'ast' in metric_signature.parameters
         ann = metric_signature.parameters['ast'].annotation
         assert is_ast_or_subclass(ann), (
-            f"{metric_config['name']} metric.value 'ast' parameter should be typed as AST or subclass"
+            f"{metric_config['name']} "
+            f"metric.value 'ast' parameter should be typed as AST or subclass"
         )
 
 
 def is_ast_or_subclass(ann):
     if ann is inspect._empty:
         return False
     if isinstance(ann, str):
-        return ann == "AST" or ann.endswith(".AST")
+        return ann == 'AST' or ann.endswith('.AST')
     try:
         return issubclass(ann, AST)
     except TypeError: