doc: fix typos

PR #1605

crates/core/app.rs

@@ -461,7 +461,7 @@ impl RGArg {
         self
     }
 
-    /// Permit this flag to have values that begin with a hypen.
+    /// Permit this flag to have values that begin with a hyphen.
     ///
     /// This panics if this arg is not a flag.
     fn allow_leading_hyphen(mut self) -> RGArg {
@@ -2577,7 +2577,7 @@ flag nor any other ripgrep flag will modify your files.
 
 Capture group indices (e.g., $5) and names (e.g., $foo) are supported in the
 replacement string. Capture group indices are numbered based on the position of
-the opening paranthesis of the group, where the leftmost such group is $1. The
+the opening parenthesis of the group, where the leftmost such group is $1. The
 special $0 group corresponds to the entire match.
 
 In shells such as Bash and zsh, you should wrap the pattern in single quotes

crates/core/args.rs

@@ -1541,7 +1541,7 @@ impl ArgMatches {
     ///
     /// Generally, this is only enabled when explicitly requested by in the
     /// command line arguments via the --stats flag, but this can also be
-    /// enabled implicity via the output format, e.g., for JSON Lines.
+    /// enabled implicitly via the output format, e.g., for JSON Lines.
     fn stats(&self) -> bool {
         self.output_kind() == OutputKind::JSON || self.is_present("stats")
     }