Apply suggestions from code review

Co-authored-by: Andrew Eisenberg <aeisenberg@github.com>

extensions/ql-vscode/CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## [UNRELEASED]
 
-- Introduce evaluator options for saving intermediate results to the disk cache, and for limiting the size of this cache. [#593](https://github.com/github/vscode-codeql/pull/593)
+- Introduce evaluator options for saving intermediate results to the disk cache (`codeQL.runningQueries.saveCache`) and for limiting the size of this cache (`codeQL.runningQueries.cacheSize`). [#593](https://github.com/github/vscode-codeql/pull/593)
 - Respect the `codeQL.runningQueries.numberOfThreads` setting when creating SARIF files during result interpretation. [#771](https://github.com/github/vscode-codeql/pull/771)
 - Allow using raw LGTM project slugs for fetching LGTM databases. [#769](https://github.com/github/vscode-codeql/pull/769)
 - Better error messages when BQRS interpretation fails to produce SARIF. [#770](https://github.com/github/vscode-codeql/pull/770)

extensions/ql-vscode/package.json

@@ -126,7 +126,7 @@
         "codeQL.runningQueries.saveCache": {
           "type": "boolean",
           "default": false,
-          "description": "Aggressively save intermediate results to the disk cache. This advanced option is not recommended as it will greatly increase disk usage and evaluation time, but it may speed up subsequent queries if they are similar."
+          "description": "Aggressively save intermediate results to the disk cache. This may speed up subsequent queries if they are similar. Be aware that using this option will greatly increase disk usage and initial evaluation time."
         },
         "codeQL.runningQueries.cacheSize": {
           "type": [