fixed incorrent '=' -> '>='

docs/requirements.txt

@@ -2,12 +2,12 @@
 sphinx==5.3.0
 sphinx_rtd_theme==1.1.1
 readthedocs-sphinx-search==0.1.1
-numpy=1.21
-pandas=1.5.3
-scipy=1.7
-h5py=3.6
-mpi4py=3.1
-matplotlib=3.5
-seaborn=0.12
-mpmath=1.2.1
-accelerator-toolbox=0.5.0
\ No newline at end of file
+numpy>=1.21
+pandas>=1.5.3
+scipy>=1.7
+h5py>=3.6
+mpi4py>=3.1
+matplotlib>=3.5
+seaborn>=0.12
+mpmath>=1.2.1
+accelerator-toolbox>=0.5.0
\ No newline at end of file