re-case WwwAuthenticate to match guidelines (Azure#19286)

Author: christothes

sdk/core/Azure.Core/api/Azure.Core.net461.cs

@@ -269,7 +269,7 @@ public static partial class Names
             public static string Range { get { throw null; } }
             public static string Referer { get { throw null; } }
             public static string UserAgent { get { throw null; } }
-            public static string WWWAuthenticate { get { throw null; } }
+            public static string WwwAuthenticate { get { throw null; } }
             public static string XMsDate { get { throw null; } }
             public static string XMsRange { get { throw null; } }
             public static string XMsRequestId { get { throw null; } }

sdk/core/Azure.Core/api/Azure.Core.net5.0.cs

@@ -269,7 +269,7 @@ public static partial class Names
             public static string Range { get { throw null; } }
             public static string Referer { get { throw null; } }
             public static string UserAgent { get { throw null; } }
-            public static string WWWAuthenticate { get { throw null; } }
+            public static string WwwAuthenticate { get { throw null; } }
             public static string XMsDate { get { throw null; } }
             public static string XMsRange { get { throw null; } }
             public static string XMsRequestId { get { throw null; } }

sdk/core/Azure.Core/api/Azure.Core.netstandard2.0.cs

@@ -269,7 +269,7 @@ public static partial class Names
             public static string Range { get { throw null; } }
             public static string Referer { get { throw null; } }
             public static string UserAgent { get { throw null; } }
-            public static string WWWAuthenticate { get { throw null; } }
+            public static string WwwAuthenticate { get { throw null; } }
             public static string XMsDate { get { throw null; } }
             public static string XMsRange { get { throw null; } }
             public static string XMsRequestId { get { throw null; } }

sdk/core/Azure.Core/src/HttpHeader.cs

@@ -148,7 +148,7 @@ public static class Names
             /// <summary>
             /// Returns <code>"WWW-Authenticate"</code>.
             /// </summary>
-            public static string WWWAuthenticate => "WWW-Authenticate";
+            public static string WwwAuthenticate => "WWW-Authenticate";
         }
 
 #pragma warning disable CA1034 // Nested types should not be visible

sdk/core/Azure.Core/src/Shared/AuthorizationChallengeParser.cs

@@ -22,7 +22,7 @@ internal static class AuthorizationChallengeParser
         /// <returns>The value of the parameter name specified in <paramref name="challengeParameter"/> if it is found in the specified <paramref name="challengeScheme"/>.</returns>
         public static string? GetChallengeParameterFromResponse(Response response, string challengeScheme, string challengeParameter)
         {
-            if (response.Status != (int)HttpStatusCode.Unauthorized || !response.Headers.TryGetValue(HttpHeader.Names.WWWAuthenticate, out string? headerValue))
+            if (response.Status != (int)HttpStatusCode.Unauthorized || !response.Headers.TryGetValue(HttpHeader.Names.WwwAuthenticate, out string? headerValue))
             {
                 return null;
             }

sdk/core/Azure.Core/src/Shared/BearerTokenChallengeAuthenticationPolicy.cs

@@ -102,7 +102,7 @@ private async ValueTask ProcessAsync(HttpMessage message, ReadOnlyMemory<HttpPip
             }
 
             // Check if we have received a challenge or we have not yet issued the first request.
-            if (message.Response.Status == (int)HttpStatusCode.Unauthorized && message.Response.Headers.Contains(HttpHeader.Names.WWWAuthenticate))
+            if (message.Response.Status == (int)HttpStatusCode.Unauthorized && message.Response.Headers.Contains(HttpHeader.Names.WwwAuthenticate))
             {
                 // Attempt to get the TokenRequestContext based on the challenge.
                 // If we fail to get the context, the challenge was not present or invalid.