rename .PNG -> .png and minor linting

Signed-off-by: Thomas Sjögren <konstruktoid@users.noreply.github.com>

browsers/edge/group-policies/sync-browser-settings-gp.md

@@ -38,7 +38,7 @@ You can find the Microsoft Edge Group Policy settings in the following location
 To verify the settings:
 1. In the upper-right corner of Microsoft Edge, click **More** \(**...**\).
 2. Click **Settings**.
-3. Under Account, see if the setting is toggled on or off.<p>![Verify configuration](../images/sync-settings.PNG)
+3. Under Account, see if the setting is toggled on or off.<p>![Verify configuration](../images/sync-settings.png)
 
 
 ## Do not sync browser settings

browsers/edge/includes/configure-windows-defender-smartscreen-include.md

@@ -27,7 +27,7 @@ ms.topic: include
 
 To verify Windows Defender SmartScreen is turned off (disabled):
 1. Click or tap **More** (…) and select **Settings** > **View Advanced settings**.
-2.  Verify the setting **Help protect me from malicious sites and download with Windows Defender SmartScreen** is disabled.<p>![Verify that Windows Defender SmartScreen is turned off (disabled)](../images/allow-smart-screen-validation.PNG)
+2.  Verify the setting **Help protect me from malicious sites and download with Windows Defender SmartScreen** is disabled.<p>![Verify that Windows Defender SmartScreen is turned off (disabled)](../images/allow-smart-screen-validation.png)
 
 
 ### ADMX info and settings

windows/deployment/mbr-to-gpt.md

@@ -376,7 +376,7 @@ Number Friendly Name      Serial Number        HealthStatus OperationalStatus To
 
 You can also view the partition type of a disk by opening the Disk Management tool, right-clicking the disk number, clicking **Properties**, and then clicking the **Volumes** tab. See the following example:
 
-![Volumes](images/mbr2gpt-volume.PNG)
+![Volumes](images/mbr2gpt-volume.png)
 
 
 If Windows PowerShell and Disk Management are not available, such as when you are using Windows PE, you can determine the partition type at a command prompt with the DiskPart tool. To determine the partition style from a command line, type **diskpart** and then type **list disk**. See the following example:

windows/security/information-protection/bitlocker/bitlocker-recovery-guide-plan.md

@@ -339,7 +339,7 @@ There are rules governing which hint is shown during the recovery (in order of p
 
 **Result:** The hint for the Microsoft Account and the custom URL are displayed.
 
-![Example 1 of Customized BitLocker recovery screen](./images/rp-example1.PNG)
+![Example 1 of Customized BitLocker recovery screen](./images/rp-example1.png)
 
 
 #### Example 2 (single recovery key with single backup)
@@ -354,7 +354,7 @@ There are rules governing which hint is shown during the recovery (in order of p
 
 **Result:** Only the custom URL is displayed.
 
-![Example 2 of customized BitLocker recovery screen](./images/rp-example2.PNG)
+![Example 2 of customized BitLocker recovery screen](./images/rp-example2.png)
 
 
 #### Example 3 (single recovery key with multiple backups)
@@ -369,7 +369,7 @@ There are rules governing which hint is shown during the recovery (in order of p
 
 **Result:** Only the Microsoft Account hint is displayed.
 
-![Example 3 of customized BitLocker recovery screen](./images/rp-example3.PNG)
+![Example 3 of customized BitLocker recovery screen](./images/rp-example3.png)
 
 
 #### Example 4  (multiple recovery passwords)
@@ -399,7 +399,7 @@ There are rules governing which hint is shown during the recovery (in order of p
 
 **Result:** Only the hint for a successfully backed up key is displayed, even if it isn't the most recent key.
 
-![Example 4 of customized BitLocker recovery screen](./images/rp-example4.PNG)
+![Example 4 of customized BitLocker recovery screen](./images/rp-example4.png)
 
 
 #### Example 5  (multiple recovery passwords)
@@ -429,7 +429,7 @@ There are rules governing which hint is shown during the recovery (in order of p
 
 **Result:** The hint for the most recent key is displayed.
 
-![Example 5 of customized BitLocker recovery screen](./images/rp-example5.PNG)
+![Example 5 of customized BitLocker recovery screen](./images/rp-example5.png)
 
 
 ## <a href="" id="bkmk-usingaddrecovery"></a>Using additional recovery information