chore: improve markdown formatting (#8825)

fixes:

![Screenshot_2024-08-25_16-25-30](https://github.com/user-attachments/assets/c993309b-6c2d-4938-9fd0-ce0953fc63ff)

fixes:

![Screenshot_2024-08-25_16-26-29](https://github.com/user-attachments/assets/cf497f4a-d9e3-45a6-a1a5-7e215d96d022)

proxy/README.md

@@ -36,7 +36,7 @@ To play with it locally one may start proxy over a local postgres installation
 ```
 
 If both postgres and proxy are running you may send a SQL query:
-```json
+```console
 curl -k -X POST 'https://proxy.localtest.me:4444/sql' \
   -H 'Neon-Connection-String: postgres://stas:pass@proxy.localtest.me:4444/postgres' \
   -H 'Content-Type: application/json' \
@@ -44,7 +44,8 @@ curl -k -X POST 'https://proxy.localtest.me:4444/sql' \
     "query":"SELECT $1::int[] as arr, $2::jsonb as obj, 42 as num",
     "params":[ "{{1,2},{\"3\",4}}", {"key":"val", "ikey":4242}]
   }' | jq
-
+```
+```json
 {
   "command": "SELECT",
   "fields": [

storage_scrubber/README.md

@@ -98,7 +98,7 @@ to list timelines and find their backup and start LSNs.
 
 If S3 state is altered first manually, pageserver in-memory state will contain wrong data about S3 state, and tenants/timelines may get recreated on S3 (due to any layer upload due to compaction, pageserver restart, etc.). So before proceeding, for tenants/timelines which are already deleted in the console, we must remove these from pageservers.
 
-First, we need to group pageservers by buckets, `https://<admin host>/admin/pageservers`` can be used for all env nodes, then `cat /storage/pageserver/data/pageserver.toml` on every node will show the bucket names and regions needed.
+First, we need to group pageservers by buckets, `https://<admin host>/admin/pageservers` can be used for all env nodes, then `cat /storage/pageserver/data/pageserver.toml` on every node will show the bucket names and regions needed.
 
 Per bucket, for every pageserver id related, find deleted tenants: