Fix GeneratedRegexAttribute cultureName parameter documentation (#11975)

Ports documentation fix from dotnet/runtime#121073. 

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: jkotas <[email protected]>

Author: Copilot

xml/System.Text.RegularExpressions/GeneratedRegexAttribute.xml

@@ -169,7 +169,7 @@
       <Docs>
         <param name="pattern">The regular expression pattern to match.</param>
         <param name="options">A bitwise combination of the enumeration values that modify the regular expression.</param>
-        <param name="cultureName">The name of a culture to be used for case sensitive comparisons. <paramref name="cultureName" /> is not case-sensitive.</param>
+        <param name="cultureName">The name of a culture to be used for case-insensitive comparisons. <paramref name="cultureName" /> is not case-sensitive.</param>
         <summary>Initializes a new instance of <see cref="T:System.Text.RegularExpressions.GeneratedRegexAttribute" /> with the specified pattern and options.</summary>
         <remarks>For a list of predefined culture names on Windows systems, see the Language tag column in the <see href="/openspecs/windows_protocols/ms-lcid/a9eac961-e77d-41a6-90a5-ce1a8b0cdb9c">list of language/region names supported by Windows</see>. Culture names follow the standard defined by <see href="https://tools.ietf.org/html/bcp47">BCP 47</see>. In addition, starting with Windows 10, <paramref name="cultureName" /> can be any valid BCP-47 language tag.
              If <paramref name="cultureName" /> is <see cref="F:System.String.Empty" />, the invariant culture will be used.</remarks>
@@ -207,7 +207,7 @@
         <param name="pattern">The regular expression pattern to match.</param>
         <param name="options">A bitwise combination of the enumeration values that modify the regular expression.</param>
         <param name="matchTimeoutMilliseconds">A time-out interval (milliseconds), or <see cref="F:System.Threading.Timeout.Infinite" /> to indicate that the method should not time out.</param>
-        <param name="cultureName">The name of a culture to be used for case sensitive comparisons. <paramref name="cultureName" /> is not case-sensitive.</param>
+        <param name="cultureName">The name of a culture to be used for case-insensitive comparisons. <paramref name="cultureName" /> is not case-sensitive.</param>
         <summary>Initializes a new instance of <see cref="T:System.Text.RegularExpressions.GeneratedRegexAttribute" /> with the specified pattern, options, time-out value, and culture.</summary>
         <remarks>For a list of predefined culture names on Windows systems, see the Language tag column in the <see href="/openspecs/windows_protocols/ms-lcid/a9eac961-e77d-41a6-90a5-ce1a8b0cdb9c">list of language/region names supported by Windows</see>. Culture names follow the standard defined by <see href="https://tools.ietf.org/html/bcp47">BCP 47</see>. In addition, starting with Windows 10, <paramref name="cultureName" /> can be any valid BCP-47 language tag.
              If <paramref name="cultureName" /> is <see cref="F:System.String.Empty" />, the invariant culture will be used.</remarks>
@@ -232,7 +232,7 @@
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>Gets the name of the culture to be used for case sensitive comparisons.</summary>
+        <summary>Gets the name of the culture to be used for case-insensitive comparisons.</summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>