Update README.mdx (#898)

docs/validators/README.mdx

@@ -38,7 +38,7 @@ The basic flow, which you can navigate through using the "Admin Guide" on the le
 
 ### Other Information
 
-- Stellar Core uses a robust [command line](./admin-guide/commands.mdx) tool to control and operate a node. We've gathered information on some of the most-used commands, and linked to further, more comprehensive cli documentation.
+- Stellar Core uses a robust [command line](./admin-guide/commands.mdx) tool to control and operate a node. We've gathered information on some of the most-used commands, and linked to further, more comprehensive CLI documentation.
 - We've collected some miscellaneous helpful and [advanced](./admin-guide/advanced.mdx) information that could be useful as you understand and implement your core node.
 
 ## Types of validator nodes {#types-of-nodes}