Fix a codespell issue (#5255)

* Fix file name spell issue

.codespellrc

@@ -1,6 +1,6 @@
 # Ref: https://github.com/codespell-project/codespell#using-a-config-file
 [codespell]
-skip = .git,*.svg,.codespellrc,./bin/trace,./hl/tools/h5watch/h5watch.c,./tools/test/h5jam/tellub.c,./config/sanitizer/LICENSE,./config/sanitizer/sanitizers.cmake,./tools/test/h5import/testfiles/*.conf,./tools/test/h5repack/testfiles/*.dat,./test/API/driver,./configure,./bin/ltmain.sh,./bin/depcomp,./bin/config.guess,./bin/config.sub,./autom4te.cache,./m4/libtool.m4,./c++/src/*.html,./HDF5Examples/depcomp, ./HISTORY-*.txt
+skip = .git,*.svg,.codespellrc,./bin/trace,./hl/tools/h5watch/h5watch.c,./tools/test/h5jam/tellub.c,./config/sanitizer/LICENSE,./config/sanitizer/sanitizers.cmake,./tools/test/h5import/testfiles/*.conf,./tools/test/h5repack/testfiles/*.dat,./test/API/driver,./configure,./bin/ltmain.sh,./bin/depcomp,./bin/config.guess,./bin/config.sub,./autom4te.cache,./m4/libtool.m4,./c++/src/*.html,./HDF5Examples/depcomp, ./release_docs/HISTORY-*.txt
 check-hidden = true
 # ignore-regex = 
 ignore-words-list = ot,isnt,inout,nd,parms,parm,ba,offsetP,ser,ois,had,fiter,fo,clude,refere,minnum,offsetp,creat,ans:,eiter,lastr,ans,isn't,ifset,sur,trun,dne,tthe,hda,filname,te,htmp,ake,gord,numer,ro,oce,msdos,TEXTIN,indx

doxygen/examples/ImageSpec.html

@@ -756,7 +756,7 @@ <h3>
 a color is presented as a triplet specifying the intensity of red, green,
 and blue components that make up each color.
 <center>
-<p><img SRC="Palettes.fm.anc.gif" ></center>
+<p><img src="Palettes_fm_anc.gif" ></center>
 
 <p>In this example, the color component numeric type is an 8 bit unsigned
 integer. While this is most common and recommended for general use, other