Fix uses of "Boolean" in prose text

index.bs

@@ -570,7 +570,7 @@ The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "S
 
 : <dfn>Test of User Presence</dfn>
 :: A [=test of user presence=] is a simple form of [=authorization gesture=] and technical process where a user interacts with
-    an [=authenticator=] by (typically) simply touching it (other modalities may also exist), yielding a boolean result. Note
+    an [=authenticator=] by (typically) simply touching it (other modalities may also exist), yielding a Boolean result. Note
     that this does not constitute [=user verification=] because a [=test of user presence|user presence test=], by definition,
     is not capable of [=biometric recognition=], nor does it involve the presentation of a shared secret such as a password or
     PIN.
@@ -759,7 +759,7 @@ This [=internal method=] accepts three arguments:
         object specifying the desired attributes of the to-be-created [=public key credential=].
 
     :   <dfn>sameOriginWithAncestors</dfn>
-    ::  This argument is a boolean which is [TRUE] if and only if the caller's [=environment settings object=] is
+    ::  This argument is a Boolean value which is [TRUE] if and only if the caller's [=environment settings object=] is
         [=same-origin with its ancestors=].
 
 </dl>
@@ -1109,7 +1109,7 @@ This [=internal method=] accepts three arguments:
         object specifying the desired attributes of the [=public key credential=] to discover.
 
     :   <dfn>sameOriginWithAncestors</dfn>
-    ::  This argument is a boolean which is [TRUE] if and only if the caller's [=environment settings object=] is
+    ::  This argument is a Boolean value which is [TRUE] if and only if the caller's [=environment settings object=] is
         [=same-origin with its ancestors=].
 </dl>
 
@@ -1431,7 +1431,7 @@ This [=internal method=] accepts two arguments:
     ::  This argument is a {{PublicKeyCredential}} object.
 
     :   <dfn>sameOriginWithAncestors</dfn>
-    ::  This argument is a boolean which is [TRUE] if and only if the caller's [=environment settings object=] is
+    ::  This argument is a Boolean value which is [TRUE] if and only if the caller's [=environment settings object=] is
         [=same-origin with its ancestors=].
 </dl>
 
@@ -1470,7 +1470,7 @@ If this assessment is affirmative, the promise is resolved with the value of [TR
 Otherwise, the promise is resolved with the value of [FALSE].
 Based on the result, the [=[RP]=] can take further actions to guide the user to create a credential.
 
-This method has no arguments and returns a boolean value.
+This method has no arguments and returns a Boolean value.
 
 If the promise will return [FALSE],
 the [=client=] SHOULD wait a fixed period of time from the invocation of the method before returning [FALSE].