Fix common misspellings and typos

Change-Id: I8152acaccd33a4b646d56cba0748aeefa0c16b35
diff --git a/src/rspro/converter-sample.c b/src/rspro/converter-sample.c
index 2f74a80..6047273 100644
--- a/src/rspro/converter-sample.c
+++ b/src/rspro/converter-sample.c
@@ -390,7 +390,7 @@
 
 /*
  * Move the buffer content left N bits, possibly joining it with
- * preceeding content.
+ * preceding content.
  */
 static void
 buffer_shift_left(size_t offset, int bits) {