Docs: Improve grammar in src() (#2248)

docs/api/src.md

@@ -55,9 +55,9 @@ When an invalid glob is given in `globs`, throws an error with the message, "Inv
 
 | name | type | default | note |
 |:--------:|:------:|------------|--------|
-| buffer | boolean <br> function | true | When true, file contents are buffered into memory. If false, the Vinyl object's `contents` property will be a paused stream. Contents of large files may not be able to be buffered. <br> **Note:** Plugins may not implement support for streaming contents. |
+| buffer | boolean <br> function | true | When true, file contents are buffered into memory. If false, the Vinyl object's `contents` property will be a paused stream. It may not be possible to buffer the contents of large files. <br> **Note:** Plugins may not implement support for streaming contents. |
 | read | boolean <br> function | true | If false, files will be not be read and their Vinyl objects won't be writable to disk via `.dest()`. |
-| since | date <br> timestamp <br> function | | When set, only creates Vinyl objects for files that have been modified since the specified time. |
+| since | date <br> timestamp <br> function | | When set, only creates Vinyl objects for files modified since the specified time. |
 | removeBOM | boolean <br> function | true | When true, removes the BOM from UTF-8 encoded files. If false, ignores a BOM. |
 | sourcemaps | boolean <br> function | false | If true, enables [sourcemaps][sourcemaps-section] support on Vinyl objects created. Loads inline sourcemaps and resolves external sourcemap links. |
 | resolveSymlinks | boolean <br> function | true | When true, recursively resolves symbolic links to their targets. If false, preserves the symbolic links and sets the Vinyl object's `symlink` property to the original file's path. |