update function's doc comment

Author: 2bndy5

Diff for: cpp-linter/src/common_fs/mod.rs

@@ -219,18 +219,17 @@ impl FileObj {
     }
 }
 
-/// Gets the line and column number from a given `offset` (of bytes) for given
-/// `file_path`.
+/// Gets the line number for a given `offset` (of bytes) from given the
+/// byte array `contents`.
 ///
-/// This computes the line and column numbers from a buffer of bytes read from the
-/// `file_path`. In non-UTF-8 encoded files, this does not guarantee that a word
+/// This computes the line number from a buffer of bytes.
+/// In non-UTF-8 encoded files, this does not guarantee that a word
 /// boundary exists at the returned column number. However, the `offset` given to this
 /// function is expected to originate from diagnostic information provided by
-/// clang-format or clang-tidy.
+/// clang-format.
 pub fn get_line_count_from_offset(contents: &[u8], offset: u32) -> u32 {
     let offset = (offset as usize).min(contents.len());
     let lines = contents[0..offset].split(|byte| byte == &b'\n');
-
     lines.count() as u32
 }