minor doc improvements

Author: yshavit

.github/gha_assets/release_pr_template.md

@@ -8,7 +8,7 @@ Bump version to **{{RELEASE_VERSION}}** for release.
 
 - docker image:
     - [ ] `docker pull yshavit/mdq:{{RELEASE_VERSION}}-rc`
-    - [ ] `docker run --rm -i yshavit/mdq:{{RELEASE_VERSION}} --version-rc`
+    - [ ] `docker run --rm -i yshavit/mdq:{{RELEASE_VERSION}}-rc --version`
 
 - [ ] review release notes
 

README.md

@@ -51,7 +51,7 @@ To install mdq locally, any of these will work:
    docker pull yshavit/mdq
    echo 'My [example](https://github.com/yshavit/mdq) markdown' | docker run --rm -i yshavit/mdq '[]()'
    ```
-   To use a specific release version, use `yshavit/mdq:0.3.1` (or whichever version). See [Docker Hub] for available tags.
+   To use a specific release version, use `yshavit/mdq:<version>`. See [Docker Hub] for available version tags.
 1. Download binaries from [the latest release] (or any other release, of course).
    <details>
    <summary>Mac users</summary>

src/cli.rs

@@ -72,7 +72,7 @@ pub struct Cli {
     #[arg(group = "selectors_group", value_name = "selectors")]
     pub(crate) selectors: Option<String>,
 
-    /// Quiet: do not print anything to stdout. The exit code will still be 0 if-and-only-iff any elements match.
+    /// Quiet: do not print anything to stdout. The exit code will still be 0 if any elements match, and non-0 if none do.
     #[arg(long, short)]
     pub(crate) quiet: bool,