docs: fix typos in option descriptions and the ng run long description

Several option descriptions that are published on angular.dev contain typos
("prerending", "These file are", "a unit test files", "comma seperate"). The Karma
`browsers: false` description also read "Does use run tests against a browser", which
says the opposite of what the option does. The `ng run` long description has a
run-on sentence. Correct the wording.

Author: MeAkib

packages/angular/build/src/builders/application/schema.json

@@ -568,7 +568,7 @@
       "oneOf": [
         {
           "type": "boolean",
-          "description": "Enable prerending of pages of your application during build time."
+          "description": "Enable prerendering of pages of your application during build time."
         },
         {
           "type": "object",

packages/angular/build/src/builders/karma/schema.json

@@ -245,12 +245,12 @@
       "oneOf": [
         {
           "type": "string",
-          "description": "A comma seperate list of browsers to run tests against."
+          "description": "A comma-separated list of browsers to run tests against."
         },
         {
           "const": false,
           "type": "boolean",
-          "description": "Does use run tests against a browser."
+          "description": "Does not run tests against a browser."
         }
       ]
     },

packages/angular/cli/src/commands/run/long-description.md

@@ -7,4 +7,4 @@ For example, the `serve` target for a newly generated app has a predefined
 alternate configuration named `production`.
 
 You can define new targets and their configuration options in the `architect` section
-of the `angular.json` file which you can run them from the command line using the `ng run` command.
+of the `angular.json` file, which you can run from the command line using the `ng run` command.

packages/angular_devkit/build_angular/src/builders/karma/schema.json

@@ -203,12 +203,12 @@
       "oneOf": [
         {
           "type": "string",
-          "description": "A comma seperate list of browsers to run tests against."
+          "description": "A comma-separated list of browsers to run tests against."
         },
         {
           "const": false,
           "type": "boolean",
-          "description": "Does use run tests against a browser."
+          "description": "Does not run tests against a browser."
         }
       ]
     },

packages/schematics/angular/application/schema.json

@@ -84,7 +84,7 @@
       "x-user-analytics": "ep.ng_style"
     },
     "skipTests": {
-      "description": "Skip the generation of a unit test files `spec.ts`.",
+      "description": "Skip the generation of unit test files `spec.ts`.",
       "type": "boolean",
       "default": false,
       "alias": "S"

packages/schematics/angular/ng-new/schema.json

@@ -152,7 +152,7 @@
     "aiConfig": {
       "type": "array",
       "uniqueItems": true,
-      "description": "Specifies which AI tools to generate configuration files for. These file are used to improve the outputs of AI tools by following the best practices.",
+      "description": "Specifies which AI tools to generate configuration files for. These files are used to improve the outputs of AI tools by following the best practices.",
       "items": {
         "type": "string",
         "enum": ["none", "claude-code", "cursor", "gemini-cli", "open-ai-codex", "vscode"]