Fix quotes in example (#12187)

Author: sdwheeler

reference/5.1/Microsoft.PowerShell.Core/About/about_Comparison_Operators.md

@@ -589,7 +589,7 @@ For example:
 ```powershell
 $1 = 'Goodbye'
 
-'Hello World' -replace '(\w+) \w+', '$1 Universe'
+'Hello World' -replace '(\w+) \w+', "$1 Universe"
 # Output: Goodbye Universe
 
 'Hello World' -replace '(\w+) \w+', '$1 Universe'

reference/7.4/Microsoft.PowerShell.Core/About/about_Comparison_Operators.md

@@ -612,7 +612,7 @@ For example:
 ```powershell
 $1 = 'Goodbye'
 
-'Hello World' -replace '(\w+) \w+', '$1 Universe'
+'Hello World' -replace '(\w+) \w+', "$1 Universe"
 # Output: Goodbye Universe
 
 'Hello World' -replace '(\w+) \w+', '$1 Universe'

reference/7.5/Microsoft.PowerShell.Core/About/about_Comparison_Operators.md

@@ -612,7 +612,7 @@ For example:
 ```powershell
 $1 = 'Goodbye'
 
-'Hello World' -replace '(\w+) \w+', '$1 Universe'
+'Hello World' -replace '(\w+) \w+', "$1 Universe"
 # Output: Goodbye Universe
 
 'Hello World' -replace '(\w+) \w+', '$1 Universe'

reference/7.6/Microsoft.PowerShell.Core/About/about_Comparison_Operators.md

@@ -612,7 +612,7 @@ For example:
 ```powershell
 $1 = 'Goodbye'
 
-'Hello World' -replace '(\w+) \w+', '$1 Universe'
+'Hello World' -replace '(\w+) \w+', "$1 Universe"
 # Output: Goodbye Universe
 
 'Hello World' -replace '(\w+) \w+', '$1 Universe'