fix misspelling of license (#10881)

* fix misspelling

* add another misspelling fix

Co-authored-by: Paul Backus <[email protected]>

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Co-authored-by: Paul Backus <[email protected]>

Author: blobbo7

README.md

@@ -26,8 +26,8 @@ You should
 To [build everything yourself](http://wiki.dlang.org/Building_DMD),
 there is a [description in the wiki](http://wiki.dlang.org/Building_DMD).
 
-Phobos is distributed under Boost Software Licence.
-See the [licence file](LICENSE_1_0.txt).
+Phobos is distributed under Boost Software License.
+See the [license file](LICENSE_1_0.txt).
 
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