Fix typos

Founda by duck.ai.

README.freqranges

@@ -4,7 +4,7 @@ region restrictions
 As of 2020-05-05 the behavior is:
 
 #1 Any range which shows ITU# or TBD has not been modified to this convention
-#2 Ranges on the backends are being change to USA/EUR/KOR/TPE/ITR per the
+#2 Ranges on the backends are being changed to USA/EUR/KOR/TPE/ITR per the
  IC-9700 convention.  So if you see one of those monikers on a rig's freq
  range it should accurately reflect the rig's capabilities.
 

README.md

@@ -11,7 +11,7 @@ Daily snapshots are available at https://n0nb.users.sourceforge.net/
 Development happens on the github master (often by
 merging feature branches) and each release has a release branch.
 
-Many Amateur Radio Transceivers come with serial interfaces that allows
+Many Amateur Radio Transceivers come with serial interfaces that allow
 software to control the radio. This project will endeavour to provide shared
 libraries that greatly simplify the application programmer's interaction
 with radio equipment and other controllable devices such as rotators,
@@ -90,7 +90,7 @@ Note: if ./configure does not exist run ./bootstrap first
         sudo make install
 
 For debugging use this configure
-        ./configure CFLAGS=-g -O0 -fPIC --no-create --no-recursio
+        ./configure CFLAGS=-g -O0 -fPIC --no-create --no-recursion
 
 See the INSTALL file for more information.