Small documentation fixes (#3520)

README.md

@@ -1622,6 +1622,7 @@ I deeply appreciate the help of the following people.
 - [Andrea Cocito](https://github.com/puffetto) added a clarification on macro usage to the documentation.
 - [Krzysiek Karbowiak](https://github.com/kkarbowiak) refactored the tests to use `CHECK_THROWS_WITH_AS`.
 - [Chaoqi Zhang](https://github.com/prncoprs) fixed a typo.
+- [ivanovmp](https://github.com/ivanovmp) fixed a whitespace error.
 
 Thanks a lot for helping out! Please [let me know](mailto:mail@nlohmann.me) if I forgot someone.
 
@@ -1656,7 +1657,7 @@ The library itself consists of a single header file licensed under the MIT licen
 
 ## Projects using JSON for Modern C++
 
-The library is currently used in Apple macOS Sierra and iOS 10. I am not sure what they are using the library for, but I am happy that it runs on so many devices.
+The library is currently used in Apple macOS Sierra-Monterey and iOS 10-15. I am not sure what they are using the library for, but I am happy that it runs on so many devices.
 
 
 ## Notes

docs/mkdocs/docs/features/json_pointer.md

@@ -18,11 +18,11 @@ Consider the following JSON document
 }
 ```
 
-Then every value inside the JSON document can be idientified as follows:
+Then every value inside the JSON document can be identified as follows:
 
 | JSON Pointer      | JSON value                                                                       |
 |-------------------|----------------------------------------------------------------------------------|
-| `/`               | `#!json {"array":["A","B","C"],"nested":{"one":1,"two":2,"three":[true,false]}}` |
+| ``                | `#!json {"array":["A","B","C"],"nested":{"one":1,"two":2,"three":[true,false]}}` |
 | `/array`          | `#!json ["A","B","C"]`                                                           |
 | `/array/0`        | `#!json A`                                                                       |
 | `/array/1`        | `#!json B`                                                                       |
@@ -34,6 +34,9 @@ Then every value inside the JSON document can be idientified as follows:
 | `/nested/three/0` | `#!json true`                                                                    |
 | `/nested/three/1` | `#!json false`                                                                   |
 
+Note `/` does not identify the root (i.e., the whole document), but an object entry with empty key `""`. See
+[RFC 6901](https://tools.ietf.org/html/rfc6901) for more information.
+
 ## JSON Pointer creation
 
 JSON Pointers can be created from a string: