Update README.md files

* Fix typo
* Improve links

Change-Id: Ie77ec795675bf7497c90620eb44ebb3191c003b1
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133067
Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>

Author: hosseinn

README.md

@@ -18,8 +18,8 @@ A quick overview of the LibreOffice code structure.
 You can develop for LibreOffice in one of two ways, one
 recommended and one much less so. First the somewhat less recommended
 way: it is possible to use the SDK to develop an extension,
-for which you can read the API docs [here](https://api.libreoffice.org/)
-and [here](https://wiki.documentfoundation.org/Documentation/DevGuide).
+for which you can read the [API docs](https://api.libreoffice.org/)
+and [Developers Guide](https://wiki.documentfoundation.org/Documentation/DevGuide).
 This re-uses the (extremely generic) UNO APIs that are also used by
 macro scripting in StarBasic.
 
@@ -51,7 +51,7 @@ run and compile LibreOffice, also used by the TDF builds:
 * Emscripten / WASM:
     * Runtime: a browser with SharedMemory support (threads + atomics)
     * Build: Qt 5.15 with Qt supported Emscripten 1.39.8
-    * See README.wasm
+    * See [README.wasm](static/README.wasm.md)
 
 If you want to use Clang with the LibreOffice compiler plugins, the minimal
 version of Clang is 12.0.1. Since Xcode doesn't provide the compiler plugin

drawinglayer/README.md

@@ -86,7 +86,7 @@ printing), etc.
 ## Dumping DrawingLayer Primitives as XML
 
 For debugging purposes, it is possible to dump the drawinglayer primitives as
-as an xml file. The drawinglayer xml dump can show possible problems with the
+an xml file. The drawinglayer xml dump can show possible problems with the
 rendering.
 
 For example, in `emfio/qa/cppunit/emf/EmfImportTest.cxx`, one can write:

emfio/README.md

@@ -51,7 +51,7 @@ documentation.
 
 The drawinglayer primitives created to draw the emf/wmf files can be dumped as
 xml for debugging purposes. For more information, please refer to the
-[drawyinglayer](../drawyinglayer) documentation.
+[drawinglayer](../drawyinglayer) documentation.
 
 ## Limitations
 Not all the WMF/EMF/EMF+ records are supported by this module. Unsupported