Apply suggestions from code review

Co-authored-by: Nivi Sarkar <55898241+nivi-apple@users.noreply.github.com>

Author: bzbarsky-apple

src/darwin/Framework/CHIP/ServerEndpoint/MTRServerAttribute.h

@@ -41,7 +41,7 @@ MTR_AVAILABLE(ios(17.6), macos(14.6), watchos(10.6), tvos(17.6))
  * Will fail if the attribute ID is not valid per the Matter specification or
  * the attribute value is not a valid data-value.
  *
- * requiredPrivilege is the privilege required to read the attribute.  This
+ * requiredPrivilege is the privilege required to read the attribute. This
  * initializer may fail if the provided attributeID is a global attribute and
  * the provided requiredPrivilege value is not correct for that attribute ID.
  */
@@ -58,7 +58,7 @@ MTR_AVAILABLE(ios(17.6), macos(14.6), watchos(10.6), tvos(17.6))
 /**
  * Create an attribute description for a FeatureMap attribute with the provided
  * value (expected to be an unsigned integer representing the value of the
- * bitmap).  This will automatically set requiredPrivilege to the right value
+ * bitmap). This will automatically set requiredPrivilege to the right value
  * for FeatureMap.
  */
 + (MTRServerAttribute *)newFeatureMapAttributeWithInitialValue:(NSNumber *)value;

src/darwin/Framework/CHIP/ServerEndpoint/MTRServerAttribute.mm

@@ -95,7 +95,7 @@ - (nullable instancetype)initWithAttributeID:(NSNumber *)attributeID value:(NSDi
     _writable = writable;
     _parentCluster = app::ConcreteClusterPath(kInvalidEndpointId, kInvalidClusterId);
 
-    // now store the value and its serialization.  This will also check that the
+    // Now store the value and its serialization. This will also check that the
     // value is serializable to TLV.
     if ([self setValueInternal:value logIfNotAssociated:NO] == NO) {
         return nil;