updated changelog

updated changelog to match formatting of the rest of the file.

CHANGELOG.md

@@ -3,39 +3,48 @@
 ## 2.2.1b1 (2021-06-17)
 
 
-### feat
-Add support for open telemetry (#633) (2ba879a)
-add decimal/numeric support (#620) (d09ad61)
-added unit test with coverage of 68% (#611) (92ad508)
-update docs and nox file to compile it (#610) (876f2fc)
-update workflow files to uniformly distribute the test modules by time taken by each test module (#615) (c386123)
-move migrations test modules to run against different emulator (#613) (5b3b2e4)
-
-### fix
-correct import path (#649) (bc99bb5)
-remove error msg check from test_decimal_precision_limit for non emulator test (#647) (fe4a062)
-remove error msg check from test_decimal_precision_limit (#646) (9be15c0)
-remove delete of instance if it already exists, as it might be in use by another test (#641) (0544208)
-correct test case for sql_flush for multiple delete table commands (#629) (3de1a81)
-iexact lookup with Transform expression crash issue when RHS is direct value and a transform function is involved (#628) (2772b57)
-Update links in comments to use googleapis repo (#622) (3fa1aeb)
-Remove un necessary file from code base (#608) (58b9969)
-lint_setup_py was failing in Kokoro is now fixed (#607) (d125148)
-Replace, fast-forward Django CI branch (#598) (5d65e3f)
-
-### refactor
-update coverage score in nox file and cleanup imports in test_operations (#638) (b1f49f7)
-
-### docs
-add docs build kokoro config for django spanner (#644) (ecf241a)
-
-### chore
-release 2.2.1b1 (505d3ac)
-add SECURITY.md (#616) (75f1a65)
-add a Code of Conduct (#604) (c996400)
-Remove README note about Variance/StdDev (#601) (4ec363f)
-Add contributing section to README (#600) (2311854)
-README updates (#599) (2c8fb24)
+### Features
+
+* Add support for open telemetry (#633) (2ba879a)
+* add decimal/numeric support (#620) (d09ad61)
+* added unit test with coverage of 68% (#611) (92ad508)
+* update docs and nox file to compile it (#610) (876f2fc)
+* update workflow files to uniformly distribute the test modules by time taken by each test module (#615) (c386123)
+* move migrations test modules to run against different emulator (#613) (5b3b2e4)
+
+
+### Bug Fixes
+
+* correct import path (#649) (bc99bb5)
+* remove error msg check from test_decimal_precision_limit for non emulator test (#647) (fe4a062)
+* remove error msg check from test_decimal_precision_limit (#646) (9be15c0)
+* remove delete of instance if it already exists, as it might be in use by another test (#641) (0544208)
+* correct test case for sql_flush for multiple delete table commands (#629) (3de1a81)
+* iexact lookup with Transform expression crash issue when RHS is direct value and a transform function is involved (#628) (2772b57)
+* Update links in comments to use googleapis repo (#622) (3fa1aeb)
+* Remove un necessary file from code base (#608) (58b9969)
+* lint_setup_py was failing in Kokoro is now fixed (#607) (d125148)
+* Replace, fast-forward Django CI branch (#598) (5d65e3f)
+
+
+### Code Refactoring
+
+* update coverage score in nox file and cleanup imports in test_operations (#638) (b1f49f7)
+
+
+### Documentation
+
+* add docs build kokoro config for django spanner (#644) (ecf241a)
+
+
+### Miscellaneous Chores
+
+* release 2.2.1b1 (505d3ac)
+* add SECURITY.md (#616) (75f1a65)
+* add a Code of Conduct (#604) (c996400)
+* Remove README note about Variance/StdDev (#601) (4ec363f)
+* Add contributing section to README (#600) (2311854)
+* README updates (#599) (2c8fb24)
 
 ## 2.2.1b0 (2021-01-29)