Replace CL invocation blockquotes with code blocks in _SCL_SECURE_NO_WARNINGS topic

Author: Rageking8

docs/standard-library/scl-secure-no-warnings.md

@@ -22,11 +22,15 @@ Other ways to disable warning C4996 include:
 
 - Using the [`/D` (Preprocessor Definitions)](../build/reference/d-preprocessor-definitions.md) compiler option:
 
-   > cl /D_SCL_SECURE_NO_WARNINGS [other compiler options] myfile.cpp
+   ```cmd
+   cl /D_SCL_SECURE_NO_WARNINGS [other compiler options] myfile.cpp
+   ```
 
 - Using the [`/w`](../build/reference/compiler-option-warning-level.md) compiler option:
 
-   > cl /wd4996 [other compiler options] myfile.cpp
+   ```cmd
+   cl /wd4996 [other compiler options] myfile.cpp
+   ```
 
 - Using the [`#pragma warning`](../preprocessor/warning.md) directive:
 
@@ -36,7 +40,9 @@ Other ways to disable warning C4996 include:
 
 Also, you can manually change the level of warning C4996 with the `/w<l><n>` compiler option. For example, to set warning C4996 to level 4:
 
-> cl /w44996 [other compiler options] myfile.cpp
+```cmd
+cl /w44996 [other compiler options] myfile.cpp
+```
 
 For more information, see [`/w`, `/W0`, `/W1`, `/W2`, `/W3`, `/W4`, `/w1`, `/w2`, `/w3`, `/w4`, `/Wall`, `/wd`, `/we`, `/wo`, `/Wv`, `/WX` (Warning Level)](../build/reference/compiler-option-warning-level.md).