diff --git a/specification/v0_10/json/basic_catalog.json b/specification/v0_10/json/basic_catalog.json
index fdf602abd..926c611eb 100644
--- a/specification/v0_10/json/basic_catalog.json
+++ b/specification/v0_10/json/basic_catalog.json
@@ -811,7 +811,7 @@
     },
     "formatString": {
       "type": "object",
-      "description": "Performs string interpolation of data model values and other functions in the catalog functions list and returns the resulting string. The value string can contain interpolated expressions in the `${expression}` format. Supported expression types include: JSON Pointer paths to the data model (e.g., `${/absolute/path}` or `${relative/path}`), and client-side function calls (e.g., `${now()}`). Function arguments must be named (e.g., `${formatDate(value:${/currentDate}, format:'MM-dd')}`). To include a literal `${` sequence, escape it as `\\${`.",
+      "description": "Performs string interpolation of data model values and other functions in the catalog functions list and returns the resulting string. The value string can contain interpolated expressions in the `${<expression>}` format. Supported expression types include: JSON Pointer paths to the data model (e.g., `${/absolute/path}` or `${relative/path}`), and client-side function calls (e.g., `${now()}`). Function arguments must be named (e.g., `${formatDate(value:${/currentDate}, format:'MM-dd')}`). To include a literal `${` sequence, escape it as `\\${`.",
       "properties": {
         "call": {
           "const": "formatString"
diff --git a/specification/v0_9/json/basic_catalog.json b/specification/v0_9/json/basic_catalog.json
index bbb7d83a3..f2d8386f4 100644
--- a/specification/v0_9/json/basic_catalog.json
+++ b/specification/v0_9/json/basic_catalog.json
@@ -962,7 +962,7 @@
     },
     "formatString": {
       "type": "object",
-      "description": "Performs string interpolation of data model values and other functions in the catalog functions list and returns the resulting string. The value string can contain interpolated expressions in the `${expression}` format. Supported expression types include: JSON Pointer paths to the data model (e.g., `${/absolute/path}` or `${relative/path}`), and client-side function calls (e.g., `${now()}`). Function arguments must be named (e.g., `${formatDate(value:${/currentDate}, format:'MM-dd')}`). To include a literal `${` sequence, escape it as `\\${`.",
+      "description": "Performs string interpolation of data model values and other functions in the catalog functions list and returns the resulting string. The value string can contain interpolated expressions in the `${<expression>}` format. Supported expression types include: JSON Pointer paths to the data model (e.g., `${/absolute/path}` or `${relative/path}`), and client-side function calls (e.g., `${now()}`). Function arguments must be named (e.g., `${formatDate(value:${/currentDate}, format:'MM-dd')}`). To include a literal `${` sequence, escape it as `\\${`.",
       "properties": {
         "call": {
           "const": "formatString"