fix package requirement formatting error

Thinh Nguyen · Thinh Nguyen · commit af2b18ba8828 · 2021-11-22T16:15:32.000-06:00
diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,4 @@
 datajoint>=0.13
-pyopenephys @ https://github.com/ttngu207/pyopenephys.git
+pyopenephys @ git+https://github.com/ttngu207/pyopenephys.git
 openpyxl
 pynwb==1.4.0
