Update CHANGELOG for v2.3.0-preview.4

Author: andyleejordan

.markdownlint.json

@@ -1,4 +1,5 @@
 {
     "MD013": false,
-    "MD033": false
+    "MD033": false,
+    "MD022": false
 }

CHANGELOG.md

@@ -1,5 +1,13 @@
 # PowerShell Editor Services Release History
 
+## v2.3.0-preview.4
+### Tuesday, February 23, 2021
+
+- 📖 🐛 [PowerShellEditorServices #1416](https://github.com/PowerShell/PowerShellEditorServices/pull/1416) -
+  Fix some markdownlint errors in README.
+- 🛫 🐛 [PowerShellEditorServices #1415](https://github.com/PowerShell/PowerShellEditorServices/pull/1415) -
+  Fix configuration processing to ensure that profiles are loaded.
+
 ## v2.3.0-preview.3
 ### Friday, February 19, 2021