DOC-1747 RS: Copy shard_key_regex format fixes to 7.4 REST API reference

Author: rrelledge

content/operate/rs/7.4/references/rest-api/objects/bdb/_index.md

@@ -125,7 +125,7 @@ An API object that represents a managed database in the cluster.
 | sched_policy | Controls how server-side connections are used when forwarding traffic to shards.<br />Values:<br />**cmp**: Closest to max_pipelined policy. Pick the connection with the most pipelined commands that has not reached the max_pipelined limit.<br />**mru**: Try to use most recently used connections.<br />**spread**: Try to use all connections.<br />**mnp**: Minimal pipeline policy. Pick the connection with the least pipelined commands. |
 | shard_block_crossslot_keys | boolean (default:&nbsp;false); In Lua scripts, prevent use of keys from different hash slots within the range owned by the current shard |
 | shard_block_foreign_keys | boolean (default:&nbsp;true); In Lua scripts, `foreign_keys` prevent use of keys which could reside in a different shard (foreign keys) |
-| shard_key_regex | Custom keyname-based sharding rules.<br />`[{"regex": string}, ...]`<br />To use the default rules you should set the value to: <br />`[{"regex": ".*{(?<tag>.*)}.*"}, {"regex": "(?<tag>.*)"}]` |
+| shard_key_regex | Custom keyname-based sharding rules.<br />`[{"regex": string}, ...]`<br />To use the default rules you should set the value to: <br />`[{"regex": ".*\\{(?<tag>.*)\\}.*"}, {"regex": "(?<tag>.*)"}]` |
 | shard_list | array of integers; Cluster unique IDs of all database shards. |
 | sharding | boolean (default:&nbsp;false); Cluster mode (server-side sharding). When true, shard hashing rules must be provided by either `oss_sharding` or `shard_key_regex` |
 | shards_count | integer, <nobr>(range: 1-512)</nobr> (default:&nbsp;1); Number of database server-side shards |

content/operate/rs/7.4/references/rest-api/objects/crdb/database_config.md

@@ -33,7 +33,7 @@ An object that represents the database configuration.
 | rack_aware | boolean | Require the database to be always replicated across multiple racks |
 | replication | boolean | Database replication |
 | sharding | boolean (default: false) | Cluster mode (server-side sharding). When true, shard hashing rules must be provided by either `oss_sharding` or `shard_key_regex` |
-| shard_key_regex | `[{ "regex": string }, ...]` | Custom keyname-based sharding rules (required if sharding is enabled)<br /><br />To use the default rules you should set the value to:<br />`[{ “regex”: “.*\\{(?< tag >.*)\\}.*” }, { “regex”: “(?< tag >.*)” }]` |
+| shard_key_regex | `[{ "regex": string }, ...]` | Custom keyname-based sharding rules (required if sharding is enabled)<br /><br />To use the default rules you should set the value to:<br />`[{"regex": ".*\\{(?<tag>.*)\\}.*"}, {"regex": "(?<tag>.*)"}]` |
 | shards_count | integer | Number of database shards |
 | shards_placement | string | Control the density of shards: should they reside on as few or as many nodes as possible |
 | snapshot_policy | array of [snapshot_policy]({{< relref "/operate/rs/references/rest-api/objects/bdb/snapshot_policy" >}}) objects | Policy for snapshot-based data persistence (required) |