Remove static/sb-alg-list.json from PR and add to .gitignore. The fetch-readmes script gets it for build

Author: crandmck

.gitignore

@@ -7,6 +7,8 @@
 # Generated files
 .docusaurus
 .cache-loader
+
+# External files loaded by fetch-readmes script
 /docs/js-sdk/api
 /docs/js-sdk/examples/quickstart/*.ts
 /docs/js-sdk/examples/view-manifest/*.ts
@@ -23,6 +25,7 @@
 /docs/rust-sdk/*.md
 /docs/rust-sdk/docs/*.md
 /docs/**/readme.md
+/static/sb-alg-list.json
 
 # Misc
 .DS_Store