added a forgotten period

Author: pavelkomarov

pynumdiff/linear_model/__init__.py

@@ -6,7 +6,7 @@
 except:
     from warnings import warn
     warn("""Limited Linear Model Support Detected! CVXPY is not installed.
-        Install CVXPY to use lineardiff derivatives You can still use other methods.""")
+        Install CVXPY to use lineardiff derivatives. You can still use other methods.""")
 
 from ._linear_model import savgoldiff, polydiff, spectraldiff