Add blockquotes for error messages in range [C2821, C2850]

Author: Rageking8

docs/error-messages/compiler-errors-2/compiler-error-c2821.md

@@ -8,7 +8,7 @@ ms.assetid: e8d71988-a968-4484-94db-e8c3bad74a4a
 ---
 # Compiler Error C2821
 
-first formal parameter to 'operator new' must be 'unsigned int'
+> first formal parameter to 'operator new' must be 'unsigned int'
 
 The first formal parameter of the [operator new](../../standard-library/new-operators.md#op_new) must be an unsigned **`int`**.
 

docs/error-messages/compiler-errors-2/compiler-error-c2824.md

@@ -8,7 +8,7 @@ ms.assetid: 5bd865f7-e0af-404e-80fe-e2b798b44a59
 ---
 # Compiler Error C2824
 
-return type for 'operator new' must be 'void *'
+> return type for 'operator new' must be 'void *'
 
 With non-based pointers, overloads of operator `new` must return `void *`.
 

docs/error-messages/compiler-errors-2/compiler-error-c2825.md

@@ -8,7 +8,7 @@ ms.assetid: c832f1c1-5184-4fc2-9356-12b21daa7af3
 ---
 # Compiler Error C2825
 
-var : must be a class or namespace when followed by '::'
+> var : must be a class or namespace when followed by '::'
 
 An unsuccessful attempt was made to form a qualified name.
 

docs/error-messages/compiler-errors-2/compiler-error-c2827.md

@@ -8,7 +8,7 @@ ms.assetid: cb3e5814-0c92-40e4-b620-98578ae3003a
 ---
 # Compiler Error C2827
 
-'operator operator' cannot be globally overridden with unary form
+> 'operator operator' cannot be globally overridden with unary form
 
 The operator cannot have a unary form outside of an object.
 

docs/error-messages/compiler-errors-2/compiler-error-c2828.md

@@ -8,7 +8,7 @@ ms.assetid: d8df6ed4-5954-46c2-b59b-52881d4e923d
 ---
 # Compiler Error C2828
 
-'operator operator' cannot be globally overridden with binary form
+> 'operator operator' cannot be globally overridden with binary form
 
 The operator cannot have a binary form outside of an object.
 

docs/error-messages/compiler-errors-2/compiler-error-c2829.md

@@ -8,7 +8,7 @@ ms.assetid: b3bfecb8-c8c1-45fd-bb85-4b42a6b8ed2b
 ---
 # Compiler Error C2829
 
-'operator operator' cannot have a variable parameter list
+> 'operator operator' cannot have a variable parameter list
 
 Only two operators can take variable parameter lists:
 

docs/error-messages/compiler-errors-2/compiler-error-c2830.md

@@ -8,6 +8,6 @@ ms.assetid: 91607d2d-6aab-4c1b-b253-a7b8ec37760e
 ---
 # Compiler Error C2830
 
-only placement parameters to 'operator new' can have default values
+> only placement parameters to 'operator new' can have default values
 
 The standard formal parameters for [operator new](../../standard-library/new-operators.md#op_new) cannot have default values. Only user-defined placement parameters can specify defaults.

docs/error-messages/compiler-errors-2/compiler-error-c2831.md

@@ -8,7 +8,7 @@ ms.assetid: c8c04288-0889-4265-a077-17f94cbcdcc9
 ---
 # Compiler Error C2831
 
-'operator operator' cannot have default parameters
+> 'operator operator' cannot have default parameters
 
 Only three operators can have default parameters:
 

docs/error-messages/compiler-errors-2/compiler-error-c2835.md

@@ -7,7 +7,7 @@ helpviewer_keywords: ["C2835"]
 ---
 # Compiler Error C2835
 
-user-defined conversion 'type' takes no formal parameters
+> user-defined conversion 'type' takes no formal parameters
 
 User-defined type conversions cannot take formal parameters.
 

docs/error-messages/compiler-errors-2/compiler-error-c2838.md

@@ -8,7 +8,7 @@ ms.assetid: 176b2ad6-7a84-4019-b97e-328866054457
 ---
 # Compiler Error C2838
 
-'member' : illegal qualified name in member declaration
+> 'member' : illegal qualified name in member declaration
 
 A class, structure, or union uses a fully qualified name to redeclare a member of another class, structure, or union.