[Buildroot] [PATCH] docs/manual: update intro, make gender-neutral

Besides just updating a little terminology, remove the awkward
reference to "his" when referring to developers.

Signed-off-by: Robert P. J. Day <[email protected]>

---

  just testing if this first patch passes examination.

diff --git a/docs/manual/introduction.adoc b/docs/manual/introduction.adoc
index 476aa81edc..1a8cc6d13e 100644
--- a/docs/manual/introduction.adoc
+++ b/docs/manual/introduction.adoc
@@ -16,11 +16,11 @@ filesystem with Buildroot).

 Buildroot is useful mainly for people working with embedded systems.
 Embedded systems often use processors that are not the regular x86
-processors everyone is used to having in his PC. They can be PowerPC
-processors, MIPS processors, ARM processors, etc.
+processors developers are used to having in their PCs, including
+ARM (both 32- and 64-bit), MIPS, PowerPC, RISC-V and more.

 Buildroot supports numerous processors and their variants; it also
-comes with default configurations for several boards available
+comes with default configurations for hundreds of boards available
 off-the-shelf. Besides this, a number of third-party projects are based on,
 or develop their BSP footnote:[BSP: Board Support Package] or
 SDK footnote:[SDK: Software Development Kit] on top of Buildroot.
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