Fix typo in README

The path for settings does not match example above and below.

Author: misterGF

README.md

@@ -261,7 +261,7 @@ that does not output an Error or Warning diagnostic record.
 Then invoke that settings file when using `Invoke-ScriptAnalyzer`:
 
 ``` PowerShell
-Invoke-ScriptAnalyzer -Path MyScript.ps1 -Setting ScriptAnalyzerSettings.psd1
+Invoke-ScriptAnalyzer -Path MyScript.ps1 -Setting PSScriptAnalyzerSettings.psd1
 ```
 
 The next example selects a few rules to execute instead of all the default rules.