[COIL] Change chromium code search type links to use main rather than master for docs

    See this doc: go/chromium-coil-change for more info
    BUG=1210385

Change-Id: I6cd8548301e360bae8e71384dbd8ef11aa6c985f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2902904
Reviewed-by: My Nguyen <[email protected]>
Commit-Queue: My Nguyen <[email protected]>
Auto-Submit: John Palmer <[email protected]>
Cr-Commit-Position: refs/heads/master@{#885851}
diff --git a/docs/windows_shortcut_and_taskbar_handling.md b/docs/windows_shortcut_and_taskbar_handling.md
index 655d6ab8..4ced93f9 100644
--- a/docs/windows_shortcut_and_taskbar_handling.md
+++ b/docs/windows_shortcut_and_taskbar_handling.md
@@ -18,7 +18,7 @@
 App windows on Windows have an
 [App User Model ID (AUMI)](https://docs.microsoft.com/en-us/windows/win32/shell/appids)
 property. For Chrome windows, this is set in
-[BrowserWindowPropertyManager::UpdateWindowProperties](https://source.chromium.org/chromium/chromium/src/+/master:chrome/browser/ui/views/frame/browser_window_property_manager_win.cc?q=BrowserWindowPropertyManager::UpdateWindowProperties),
+[BrowserWindowPropertyManager::UpdateWindowProperties](https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/ui/views/frame/browser_window_property_manager_win.cc?q=BrowserWindowPropertyManager::UpdateWindowProperties),
 when a window is opened. Windows desktop shortcuts have an app model property,
 and this should match the open window's AUMI. Windows groups open windows with
 the same AUMI to a taskbar icon.
@@ -27,15 +27,15 @@
 windows, which include web apps, and extensions, i.e., windows opened via
 --app-id or --app.
 
-[GetAppUserModelIdForBrowser](https://source.chromium.org/chromium/chromium/src/+/master:chrome/browser/shell_integration_win.cc?q=GetAppUserModelIdForBrowser)
+[GetAppUserModelIdForBrowser](https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/shell_integration_win.cc?q=GetAppUserModelIdForBrowser)
 constructs an AUMI for a browser window and
-[GetAppUserModelIdForApp](https://source.chromium.org/chromium/chromium/src/+/master:chrome/browser/shell_integration_win.cc?q=GetAppUserModelIdForApp)
+[GetAppUserModelIdForApp](https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/shell_integration_win.cc?q=GetAppUserModelIdForApp)
 constructs an AUMI for an app window. Each calls
-[ShellUtil::BuildAppUserModelId](https://source.chromium.org/chromium/chromium/src/+/master:chrome/installer/util/shell_util.cc;q=ShellUtil::BuildAppUserModelId)
+[ShellUtil::BuildAppUserModelId](https://source.chromium.org/chromium/chromium/src/+/main:chrome/installer/util/shell_util.cc;q=ShellUtil::BuildAppUserModelId)
 to construct the AUMI out of component strings.
 
 All AUMI's start with the base app id,
-[install_static::GetBaseAppId](https://source.chromium.org/chromium/chromium/src/+/master:chrome/install_static/install_util.cc?q=install_static::GetBaseAppId).
+[install_static::GetBaseAppId](https://source.chromium.org/chromium/chromium/src/+/main:chrome/install_static/install_util.cc?q=install_static::GetBaseAppId).
 This varies for different Chrome channels (e.g., Canary vs. Stable) and
 different Chromium-based browsers (e.g., Chrome vs. Chromium).
 
@@ -53,9 +53,9 @@
 Since AUMI's for browser and app windows include the profile_name, each
 profile's windows will be grouped together on the taskbar.
 
-shell_integration_win.cc has a function [GetExpectedAppId](https://source.chromium.org/chromium/chromium/src/+/master:chrome/browser/shell_integration_win.cc?q=GetExpectedAppid)
+shell_integration_win.cc has a function [GetExpectedAppId](https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/shell_integration_win.cc?q=GetExpectedAppid)
 to determine what the AUMI for a shortcut should be. It also has a function
-[MigrateTaskbarPins](https://source.chromium.org/chromium/chromium/src/+/master:chrome/browser/shell_integration_win.cc?q=MigrateTaskbarPins)
+[MigrateTaskbarPins](https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/shell_integration_win.cc?q=MigrateTaskbarPins)
 to migrate pinned taskbar icons if the AUMI's need to change.
 
 ## Multi-profile Support