Merge bitcoin#21292: build, doc: Fix configure script output indentat…

…ion and typos

8b08d0f build, doc: Fix configure script output indentation and typos (Hennadii Stepanov)

Pull request description:

  This PR is follow up of bitcoin#16546, that breaks the `configure` script output indentation for gui/qt/qr lines:
  ```
  Options used to compile and link:
    external signer = no
    multiprocess    = no
    with libs       = yes
    with wallet     = yes
      with sqlite   = yes
      with bdb      = yes
      with gui / qt = yes
    with qr         = yes
    with zmq        = yes
    with test       = yes
  ...
  ```

  With this PR:
  ```
  Options used to compile and link:
    external signer = no
    multiprocess    = no
    with libs       = yes
    with wallet     = yes
      with sqlite   = yes
      with bdb      = yes
    with gui / qt   = yes
      with qr       = yes
    with zmq        = yes
    with test       = yes
  ...
  ```

  Also typos are fixed.

ACKs for top commit:
  Sjors:
    utACK 8b08d0f
  vasild:
    ACK 8b08d0f

Tree-SHA512: 46dfcfb754192dbcc080348781327d1714e2f9a696f3ed9252746b426e3afc628d84adb197ba3b8080eacaa6053ccac07e670998930ae92cef8ed713dd457c10

configure.ac

@@ -863,7 +863,7 @@ if test x$use_hardening != xno; then
 
   dnl -fcf-protection used with Clang 7 causes ld to emit warnings:
   dnl ld: error: ... <corrupt x86 feature size: 0x8>
-  dnl Use CHECK_LINK_FLAG & --fatal-warnings to ensure we wont use the flag in this case.
+  dnl Use CHECK_LINK_FLAG & --fatal-warnings to ensure we won't use the flag in this case.
   AX_CHECK_LINK_FLAG([-fcf-protection=full],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fcf-protection=full"],, [[$LDFLAG_WERROR]])
 
   dnl stack-clash-protection does not work properly when building for Windows.
@@ -1902,9 +1902,9 @@ if test "x$enable_wallet" != "xno"; then
     echo "    with sqlite   = $use_sqlite"
     echo "    with bdb      = $use_bdb"
 fi
-echo "    with gui / qt = $bitcoin_enable_qt"
+echo "  with gui / qt   = $bitcoin_enable_qt"
 if test x$bitcoin_enable_qt != xno; then
-    echo "  with qr         = $use_qr"
+    echo "    with qr       = $use_qr"
 fi
 echo "  with zmq        = $use_zmq"
 if test x$enable_fuzz == xno; then

doc/external-signer.md

@@ -168,4 +168,4 @@ It then imports descriptors for all support address types, in a BIP44/49/84 comp
 
 The `displayaddress` RPC reuses some code from `getaddressinfo` on the provided address and obtains the inferred descriptor. It then calls `<cmd> --fingerprint=00000000 displayaddress --desc=<descriptor>`.
 
-`sendtoaddress` and `sendmany` check `inputs->bip32_derivs` to see if any inputs have the same `master_fingerprint` as the signer. If so, it calls `<cmd> --fingerprint=00000000 signtransaction <psbt>`. It waits for the device to return a (partially) signed psbt, tries to finalize it and broadcasts the transation.
+`sendtoaddress` and `sendmany` check `inputs->bip32_derivs` to see if any inputs have the same `master_fingerprint` as the signer. If so, it calls `<cmd> --fingerprint=00000000 signtransaction <psbt>`. It waits for the device to return a (partially) signed psbt, tries to finalize it and broadcasts the transaction.