Update FortranCon2021-string/README.md

Co-authored-by: Sebastian Ehlert <[email protected]>

Author: aman-godara

FortranCon2021-string/README.md

@@ -14,4 +14,5 @@ Since the start of the project, several string inquiry and manipulation procedur
 Every type of usage from common ones like *reversing a string* to peculiar ones like *finding n-th non-overlapping substring* are developed in close collaboration with the community.
 Flexible high-level procedures like *slice* catering to every possible need while low-level APIs like *count* are optimized to readily build upon (as stand-alone or in combination with other provided APIs) to meet any specific requirement of a user.
 
-Added APIs work with deferred-length intrinsic character as smoothly as with *string_type* giving a seamless integration between the two making them ready to be imported even to an ongoing project. Moreover, APIs being backward compatible continue to serve old projects even with their latest versions.
+All procedures work both with deferred-length intrinsic character as smoothly as with *string_type*.
+This allows seamless integration of stdlib's string processing with existing projects.