Update HISTORY.rst

Author: PJSimon

HISTORY.rst

@@ -8,12 +8,12 @@ Next release
 
 **New Features and Enhancements:**
 
-- Sensitive language replacement (`#609 <https://github.com/box/box-python-sdk/pull/609>`_)
-- Add BoxSign support (`#617 <https://github.com/box/box-python-sdk/pull/617>`_)
+- Sensitive language replacement ([#609](https://github.com/box/box-python-sdk/pull/609))
+- Add BoxSign support ([#617](https://github.com/box/box-python-sdk/pull/617))
 
 **Bug Fixes:**
 
-- Upgrade cryptography to version 3 (`#620 <https://github.com/box/box-python-sdk/pull/620>`_)
+- Upgrade cryptography to version 3 ([#620](https://github.com/box/box-python-sdk/pull/620))
 
 2.12.1 (2021-06-16)
 ++++++++