docs: fix markdown lint, terminology, and codespell errors

- MD024: rename duplicate "Example" headings to unique names
- MD040: add language specifier to fenced code block
- Terminology: "repo" → "repository", "git" → "Git", "file names" → "filenames"
- Codespell: add .codespellrc to ignore French word "ans" in article title

https://claude.ai/code/session_011wKCTFxXQBmCgzGmmfuBmq

Author: claude

.codespellrc

@@ -0,0 +1,2 @@
+[codespell]
+ignore-words-list = ans

README.md

@@ -19,7 +19,7 @@ steps:
 - **SLUG** -- Lowercase, replace special characters with `-`, limit to 63 characters. _Dots and underscores preserved._
 - **SLUG_URL** -- Same as SLUG, but dots and underscores are also replaced. _Safe for URLs and subdomains._
 - **SHORT** -- Shorten Git SHA values to a unique prefix.
-- **PART** -- Extract portions of a variable (e.g., owner or repo name from `GITHUB_REPOSITORY`).
+- **PART** -- Extract portions of a variable (e.g., owner or repository name from `GITHUB_REPOSITORY`).
 - **_CS** -- Case-sensitive variants of SLUG and SLUG_URL (original casing preserved).
 
 > [!TIP]
@@ -31,7 +31,7 @@ steps:
 | ----- | ------- | ----------- |
 | `prefix` | `""` | Value prepended to each generated variable name |
 | `slug-maxlength` | `63` | Max length of slugified values (`"nolimit"` to disable) |
-| `short-length` | _(git default)_ | Length of short SHA values (minimum `4`) |
+| `short-length` | _(Git default)_ | Length of short SHA values (minimum `4`) |
 
 See the [inputs reference](docs/reference/inputs.md) for details.
 

docs/explanation/slug-transformation-rules.md

@@ -4,7 +4,7 @@ This page explains the transformation algorithms used by the GitHub Slug Action,
 
 ## What is a "slug"?
 
-A slug is a human-readable identifier derived from a string, safe for use in URLs, file names, DNS labels, and other contexts where special characters are problematic. The term originates from publishing, where a "slug" is a short label used to identify a piece of content.
+A slug is a human-readable identifier derived from a string, safe for use in URLs, filenames, DNS labels, and other contexts where special characters are problematic. The term originates from publishing, where a "slug" is a short label used to identify a piece of content.
 
 In CI/CD workflows, branch names, tag names, and repository names often contain characters (`/`, `@`, spaces) that break when used in URLs, Docker tags, Kubernetes labels, or file paths. Slugifying these values makes them safe for such contexts.
 
@@ -18,7 +18,7 @@ The `SLUG` transformation applies the following steps in order:
 4. **Truncate** to a maximum length (default: 63 characters)
 5. **Remove** trailing `-` characters
 
-### Example
+### SLUG examples
 
 | Input | Output |
 | ----- | ------ |
@@ -33,7 +33,7 @@ Note that `.` and `_` are preserved in SLUG output.
 
 The `SLUG_URL` transformation is identical to `SLUG` except that `.` and `_` are also replaced with `-` in step 2. This makes the result safe for use as a URL path segment or subdomain label, where dots and underscores can cause issues.
 
-### Example
+### SLUG_URL examples
 
 | Input | SLUG | SLUG_URL |
 | ----- | ---- | -------- |

docs/getting-started.md

@@ -43,7 +43,7 @@ After the action runs, all slug variables are available as environment variables
 
 For a branch named `feat/new_feature` on repository `octocat/Hello-World`, this outputs:
 
-```
+```text
 Repository slug: octocat-hello-world
 Branch slug:     feat-new-feature
 Short SHA:       ffac537e

docs/reference/inputs.md

@@ -6,7 +6,7 @@ The GitHub Slug Action accepts the following inputs in the `with:` block.
 | ----- | -------- | ------- | ----------- |
 | `prefix` | No | `""` | Value prepended to each generated variable name. For example, `prefix: CI_` produces `CI_GITHUB_REPOSITORY_SLUG` instead of `GITHUB_REPOSITORY_SLUG`. |
 | `slug-maxlength` | Yes | `63` | Maximum length of slugified values. Accepts a number or `"nolimit"` to disable truncation. Must not be empty. |
-| `short-length` | No | _(git default)_ | Length of shortened SHA values. Minimum `4`. When empty, Git determines the length based on your repository size using [`git rev-parse`][git-revparse]. |
+| `short-length` | No | _(Git default)_ | Length of shortened SHA values. Minimum `4`. When empty, Git determines the length based on your repository size using [`git rev-parse`][git-revparse]. |
 
 ## Notes