Fix typos

src/diff/graph.rs

@@ -403,7 +403,7 @@ fn allocate_if_new<'s, 'b>(
 
 /// Does this node look like punctuation?
 ///
-/// This check is deliberately conservative, becuase it's hard to
+/// This check is deliberately conservative, because it's hard to
 /// accurately recognise punctuation in a language-agnostic way.
 fn looks_like_punctuation(node: &Syntax) -> bool {
     match node {

src/main.rs

@@ -107,7 +107,7 @@ fn reset_sigpipe() {
 /// The entrypoint.
 fn main() {
     pretty_env_logger::try_init_timed_custom_env("DFT_LOG")
-        .expect("The logger has not been previously initalized");
+        .expect("The logger has not been previously initialized");
     reset_sigpipe();
 
     match options::parse_args() {