Update test count in README features section

Updated the number of tests verifying correct behavior from 600 to 700.

Author: lofcz

README.md

@@ -17,7 +17,7 @@ The fastest deep cloning library, supporting anything from <code>.NET 4.6</code>
 ## ✨ Features
 
 - **The Fastest** - [Benchmarked](https://github.com/lofcz/FastCloner?tab=readme-ov-file#performance) to beat all other libraries with third-party independent benchmarks verifying the performance. **300x** speed-up vs `Newtonsoft.Json` and **160x** vs `System.Text.Json`
-- **The Most Correct** - Cloning objects is hard: `<T>`, `abstract`, immutables, read-only, pointers, circular dependencies, deeply nested graphs.. we have over [600 tests](https://github.com/lofcz/FastCloner/tree/next/FastCloner.Tests) verifying correct behavior in these cases and we are transparent about the [limitations](https://github.com/lofcz/FastCloner?tab=readme-ov-file#limitations)
+- **The Most Correct** - Cloning objects is hard: `<T>`, `abstract`, immutables, read-only, pointers, circular dependencies, deeply nested graphs.. we have over [700 tests](https://github.com/lofcz/FastCloner/tree/next/FastCloner.Tests) verifying correct behavior in these cases and we are transparent about the [limitations](https://github.com/lofcz/FastCloner?tab=readme-ov-file#limitations)
 - **Novel Algorithm** - FastCloner recognizes that certain cloning code cannot be generated in certain scenarios and uses highly optimized reflection-based approach instead for these types - this only happens for the members that need this, not entire objects
 - **Zero-Overhead Abstractions** - The generator uses call site analysis to eliminate indirection via inlining of generated methods. This ensures the generated code behaves like a single optimized block, just as if you hand-wrote it for maximum performance.
 - **Embeddable** - FastCloner has no dependencies outside the standard library. Source generator and reflection parts can be installed independently