Update black to stable version and reformat (#1697)

Author: sciencewhiz

.github/workflows/CI.yml

@@ -107,6 +107,6 @@ jobs:
     - uses: actions/setup-python@v2
       with:
         python-version: 3.7
-    - uses: psf/black@20.8b1
+    - uses: psf/black@22.1.0
       with:
-        args: ". --check"
+        black_args: ". --check"

source/docs/software/advanced-controls/state-space/graph.py

@@ -60,8 +60,8 @@ def lqr(*args, **kwargs):
 x1 = np.array([[0]])
 x2 = np.array([[0]])
 
-K1 = lqr(sysd, np.array([[1.0 / (1.0 ** 2)]]), np.array([[1.0 / (12.0 ** 2)]]))
-K2 = lqr(sysd, np.array([[1.0 / (0.1 ** 2)]]), np.array([[1.0 / (12.0 ** 2)]]))
+K1 = lqr(sysd, np.array([[1.0 / (1.0**2)]]), np.array([[1.0 / (12.0**2)]]))
+K2 = lqr(sysd, np.array([[1.0 / (0.1**2)]]), np.array([[1.0 / (12.0**2)]]))
 
 t1 = []
 x1data = []