docs(@angular/cli): update vendorChunk and commonChunk descriptions

(cherry picked from commit 8ec493e)

Author: alan-agius4

packages/angular/cli/lib/config/schema.json

@@ -836,12 +836,12 @@
             },
             "vendorChunk": {
               "type": "boolean",
-              "description": "Use a separate bundle containing only vendor libraries.",
+              "description": "Generate a seperate bundle containing only vendor libraries. This option should only used for development.",
               "default": true
             },
             "commonChunk": {
               "type": "boolean",
-              "description": "Use a separate bundle containing code used across multiple bundles.",
+              "description": "Generate a seperate bundle containing code used across multiple bundles.",
               "default": true
             },
             "baseHref": {
@@ -1360,11 +1360,11 @@
             },
             "vendorChunk": {
               "type": "boolean",
-              "description": "Use a separate bundle containing only vendor libraries."
+              "description": "Generate a seperate bundle containing only vendor libraries. This option should only used for development."
             },
             "commonChunk": {
               "type": "boolean",
-              "description": "Use a separate bundle containing code used across multiple bundles."
+              "description": "Generate a seperate bundle containing code used across multiple bundles."
             },
             "baseHref": {
               "type": "string",