Fix typos.

README.org

@@ -62,7 +62,7 @@ as a Linux distribution. Many have packages available.
 To be able to build ~mu~, ensure you have:
 
 - a C++17 compiler (~gcc~ or ~clang~ are known to work)
-- development packages for /Xapian/ and /GMime/ and /GLib/ (see ~meson.build~ for thex
+- development packages for /Xapian/ and /GMime/ and /GLib/ (see ~meson.build~ for the
   versions)
 - basic tools such as ~make~, ~sed~, ~grep~
 - ~meson~

lib/mu-indexer.cc

@@ -163,7 +163,7 @@ Indexer::Private::handler(const std::string& fullpath, struct stat* statbuf,
 		// in lazy-mode, we ignore this dir if its dirstamp suggest it
 		// is up-to-date (this is _not_ always true; hence we call it
 		// lazy-mode); only for actual message dirs, since the dir
-		// tstamps may not bubble up.U
+		// tstamps may not bubble up.
 		dirstamp_ = store_.dirstamp(fullpath);
 		if (conf_.lazy_check && dirstamp_ >= statbuf->st_ctime &&
 		    htype == Scanner::HandleType::EnterNewCur) {

lib/utils/mu-utils.hh

@@ -61,7 +61,7 @@ constexpr const auto SepaChar2 = '\xff';
 /*
  * Debug/error/warning logging
  *
- * The 'noexcept' means that they _wilL_ terminate the program
+ * The 'noexcept' means that they _will_ terminate the program
  * when the formatting fails (ie. a bug)
  */