Minor formatting adjustments to documentation

Co-authored-by: Frank Brückner <[email protected]>
Signed-off-by: George Steel <[email protected]>

docs/book/validators/is-json-string.md

@@ -1,4 +1,4 @@
-# IsJsonString Validator
+# IsJsonString
 
 `Laminas\Validator\IsJsonString` allows you to validate whether a given value is a string that will be successfully decoded by `json_decode`.
 
@@ -15,7 +15,7 @@ if ($validator->isValid($input)) {
 }
 ```
 
-## Restricting Acceptable JSON types
+## Restricting Acceptable JSON Types
 
 `json_decode` accepts numeric strings representing integers and floating point numbers, booleans, arrays and objects.
 You can restrict what is considered valid input using the `allow` option of the validator.
@@ -32,9 +32,9 @@ $validator->isValid('true'); // false
 
 The `allow` option is a bit mask of the `ALLOW_*` constants in `IsJsonString`:
 
-- `IsJsonString::ALLOW_INT` - Accept numeric such as "1"
-- `IsJsonString::ALLOW_FLOAT` - Accept numeric strings such as "1.234"
-- `IsJsonString::ALLOW_BOOL` - Accept "true" and "false"
+- `IsJsonString::ALLOW_INT` - Accept integer such as `1`
+- `IsJsonString::ALLOW_FLOAT` - Accept floating-point value such as `1.234`
+- `IsJsonString::ALLOW_BOOL` - Accept `true` and `false`
 - `IsJsonString::ALLOW_ARRAY` - Accept JSON arrays such as `["One", "Two"]`
 - `IsJsonString::ALLOW_OBJECT` - Accept JSON objects such as `{"Some":"Object"}`
 - `IsJsonString::ALLOW_ALL` - A convenience constant allowing all of the above _(Also the default)_.
@@ -46,7 +46,7 @@ use Laminas\Validator\IsJsonString;
 
 $validator = new IsJsonString();
 $validator->setAllow(IsJsonString::ALLOW_ARRAY | IsJsonString::ALLOW_OBJECT);
-$validator->isValid("1.234"); // false
+$validator->isValid('1.234'); // false
 ```
 
 ## Restricting Max Object or Array Nesting Level