fix(minor): Grammar and Typos (#5053)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

README.md

@@ -45,7 +45,7 @@ You have two options to install Gemini CLI.
 ### With Homebrew
 
 1. **Prerequisites:** Ensure you have [Homebrew](https://brew.sh/) installed.
-2. **Install the CLI** Execute the following command in your terminal:
+2. **Install the CLI:** Execute the following command in your terminal:
 
    ```bash
    brew install gemini-cli

docs/cli/authentication.md

@@ -3,7 +3,7 @@
 The Gemini CLI requires you to authenticate with Google's AI services. On initial startup you'll need to configure **one** of the following authentication methods:
 
 1.  **Login with Google (Gemini Code Assist):**
-    - Use this option to log in with your google account.
+    - Use this option to log in with your Google account.
     - During initial startup, Gemini CLI will direct you to a webpage for authentication. Once authenticated, your credentials will be cached locally so the web login can be skipped on subsequent runs.
     - Note that the web login must be done in a browser that can communicate with the machine Gemini CLI is being run from. (Specifically, the browser will be redirected to a localhost url that Gemini CLI will be listening on).
     - <a id="workspace-gca">Users may have to specify a GOOGLE_CLOUD_PROJECT if:</a>

docs/tools/multi-file.md

@@ -52,7 +52,7 @@ Read the main README, all Markdown files in the `docs` directory, and a specific
 read_many_files(paths=["README.md", "docs/**/*.md", "assets/logo.png"], exclude=["docs/OLD_README.md"])
 ```
 
-Read all JavaScript files but explicitly including test files and all JPEGs in an `images` folder:
+Read all JavaScript files but explicitly include test files and all JPEGs in an `images` folder:
 
 ```
 read_many_files(paths=["**/*.js"], include=["**/*.test.js", "images/**/*.jpg"], useDefaultExcludes=False)

docs/tools/shell.md

@@ -137,6 +137,5 @@ To block all shell commands, add the `run_shell_command` wildcard to `excludeToo
 
 ## Security Note for `excludeTools`
 
-Command-specific restrictions in
+Command-specific restrictions in `excludeTools` for `run_shell_command` are based on simple string matching and can be easily bypassed. This feature is **not a security mechanism** and should not be relied upon to safely execute untrusted code. It is recommended to use `coreTools` to explicitly select commands
-`excludeTools` for `run_shell_command` are based on simple string matching and can be easily bypassed. This feature is **not a security mechanism** and should not be relied upon to safely execute untrusted code. It is recommended to use `coreTools` to explicitly select commands
 that can be executed.